KT3 wiped mmc, only uboot

[csakakirc]

Greetings fellow Kindle-unbrickers, I need some advice in a desperate situation!

The subject is my KT3 with official 5.12+ firmware, what I want to break free.
Upon serial jailbreak process I accidentally pressed "4" and started to wipe the MMC. Now it says "ERROR: Can't get kernel image!" for normal boot.
I haven't made any backups from the device to load back, so now I am stuck.

Where to go from here? My plan B is to buy an exact same device and backup the mmc content from there to load back to the bricked device.

All advice appreciated!

[csakakirc]

Upon researching in the forum, I found KindleTools package forked by NiLuJe
With this I can recreate the diagkern.bin and flash it back with this magical method:
https://www.mobileread.com/forums/sh...d.php?t=296032

Under Win10 WSL looks promising, giving an Ubuntu command line in 10 minutes, after some package install the simple make finishes but the create recovery2 fails somehow.

Console output:

Spoiler:

root@X230:/home/akirc/KindleTool/KindleTool# make create recovery2 [bin.bin]
cc -O3 -ffast-math -march=native -fomit-frame-pointer -frename-registers -fweb -pipe -Iincludes -Llib -Wl,-O1 -Wl,--as-needed  create.c   -o create
create.c: In function ‘kindle_create_main’:
create.c:2725:38: warning: ‘%s’ directive output may be truncated writing 32 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]
 2725 |   snprintf(tartmpfile, PATH_MAX, "%s/%s", kt_tempdir, "kindletool_create_tarball_XXXXXX");
      |                                      ^~               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:867,
                 from kindle_tool.h:41,
                 from create.h:26,
                 from create.c:23:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 34 and 4129 bytes into a destination of size 4096
   67 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   68 |        __bos (__s), __fmt, __va_arg_pack ());
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
create.c:542:42: warning: ‘%s’ directive output may be truncated writing 28 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]
  542 |  snprintf(sigabsolutepath, PATH_MAX, "%s/%s", kt_tempdir, "kindletool_create_sig_XXXXXX");
      |                                          ^~               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:867,
                 from kindle_tool.h:41,
                 from create.h:26,
                 from create.c:23:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 30 and 4125 bytes into a destination of size 4096
   67 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   68 |        __bos (__s), __fmt, __va_arg_pack ());
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
create.c:546:42: warning: ‘%s’ directive output may be truncated writing 28 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]
  546 |  snprintf(bundle_filename, PATH_MAX, "%s/%s", kt_tempdir, "kindletool_create_idx_XXXXXX");
      |                                          ^~               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:867,
                 from kindle_tool.h:41,
                 from create.h:26,
                 from create.c:23:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 30 and 4125 bytes into a destination of size 4096
   67 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   68 |        __bos (__s), __fmt, __va_arg_pack ());
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
create.c:688:44: warning: ‘%s’ directive output may be truncated writing 28 bytes into a region of size between 0 and 4095 [-Wformat-truncation=]
  688 |    snprintf(sigabsolutepath, PATH_MAX, "%s/%s", kt_tempdir, "kindletool_create_sig_XXXXXX");
      |                                            ^~               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/stdio.h:867,
                 from kindle_tool.h:41,
                 from create.h:26,
                 from create.c:23:
/usr/include/x86_64-linux-gnu/bits/stdio2.h:67:10: note: ‘__builtin___snprintf_chk’ output between 30 and 4125 bytes into a destination of size 4096
   67 |   return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1,
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   68 |        __bos (__s), __fmt, __va_arg_pack ());
      |        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/9/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x24): undefined reference to `main'
/usr/bin/ld: /tmp/ccjzrRZJ.o: in function `sign_file':
create.c:(.text+0x4b): undefined reference to `nettle_sha256_init'
/usr/bin/ld: create.c:(.text+0x5f): undefined reference to `nettle_sha256_update'
/usr/bin/ld: create.c:(.text+0x9c): undefined reference to `__gmpz_init'
/usr/bin/ld: create.c:(.text+0xaa): undefined reference to `nettle_rsa_sha256_sign'
/usr/bin/ld: create.c:(.text+0xdf): undefined reference to `__gmpz_export'
/usr/bin/ld: create.c:(.text+0xe7): undefined reference to `__gmpz_clear'
/usr/bin/ld: create.c:(.text+0x1b7): undefined reference to `__gmpz_clear'
/usr/bin/ld: /tmp/ccjzrRZJ.o: in function `metadata_filter':
create.c:(.text+0x340): undefined reference to `archive_read_disk_can_descend'
/usr/bin/ld: create.c:(.text+0x350): undefined reference to `archive_match_new'
/usr/bin/ld: create.c:(.text+0x362): undefined reference to `archive_match_exclude_pattern'
/usr/bin/ld: create.c:(.text+0x379): undefined reference to `archive_match_exclude_pattern'
/usr/bin/ld: create.c:(.text+0x388): undefined reference to `archive_match_path_excluded'
/usr/bin/ld: create.c:(.text+0x39a): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0x3bf): undefined reference to `archive_match_free'
/usr/bin/ld: create.c:(.text+0x3da): undefined reference to `archive_match_free'
/usr/bin/ld: create.c:(.text+0x3f4): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0x424): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0x45a): undefined reference to `archive_read_disk_descend'
/usr/bin/ld: create.c:(.text+0x474): undefined reference to `archive_error_string'
/usr/bin/ld: /tmp/ccjzrRZJ.o: in function `create_from_archive_read_disk':
create.c:(.text+0x4cb): undefined reference to `archive_read_disk_new'
/usr/bin/ld: create.c:(.text+0x4d3): undefined reference to `archive_entry_new'
/usr/bin/ld: create.c:(.text+0x4e6): undefined reference to `archive_read_disk_set_standard_lookup'
/usr/bin/ld: create.c:(.text+0x4f3): undefined reference to `archive_read_disk_open'
/usr/bin/ld: create.c:(.text+0x51a): undefined reference to `archive_entry_clear'
/usr/bin/ld: create.c:(.text+0x525): undefined reference to `archive_read_next_header2'
/usr/bin/ld: create.c:(.text+0x560): undefined reference to `archive_entry_set_uid'
/usr/bin/ld: create.c:(.text+0x56f): undefined reference to `archive_entry_set_uname'
/usr/bin/ld: create.c:(.text+0x579): undefined reference to `archive_entry_set_gid'
/usr/bin/ld: create.c:(.text+0x588): undefined reference to `archive_entry_set_gname'
/usr/bin/ld: create.c:(.text+0x590): undefined reference to `archive_entry_filetype'
/usr/bin/ld: create.c:(.text+0x5a3): undefined reference to `archive_entry_filetype'
/usr/bin/ld: create.c:(.text+0x5ce): undefined reference to `archive_entry_filetype'
/usr/bin/ld: create.c:(.text+0x5e6): undefined reference to `archive_entry_set_perm'
/usr/bin/ld: create.c:(.text+0x5f3): undefined reference to `archive_entry_filetype'
/usr/bin/ld: create.c:(.text+0x60d): undefined reference to `archive_entry_set_size'
/usr/bin/ld: create.c:(.text+0x621): undefined reference to `archive_entry_copy_pathname'
/usr/bin/ld: create.c:(.text+0x62b): undefined reference to `archive_entry_set_uid'
/usr/bin/ld: create.c:(.text+0x63a): undefined reference to `archive_entry_set_uname'
/usr/bin/ld: create.c:(.text+0x644): undefined reference to `archive_entry_set_gid'
/usr/bin/ld: create.c:(.text+0x653): undefined reference to `archive_entry_set_gname'
/usr/bin/ld: create.c:(.text+0x660): undefined reference to `archive_entry_set_perm'
/usr/bin/ld: create.c:(.text+0x678): undefined reference to `archive_read_disk_descend'
/usr/bin/ld: create.c:(.text+0x68b): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0x6b6): undefined reference to `archive_write_header'
/usr/bin/ld: create.c:(.text+0x6c8): undefined reference to `archive_entry_size'
/usr/bin/ld: create.c:(.text+0x6e2): undefined reference to `archive_entry_filetype'
/usr/bin/ld: create.c:(.text+0x704): undefined reference to `archive_read_disk_descend'
/usr/bin/ld: create.c:(.text+0x734): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0x796): undefined reference to `archive_read_close'
/usr/bin/ld: create.c:(.text+0x79e): undefined reference to `archive_read_free'
/usr/bin/ld: create.c:(.text+0x7a6): undefined reference to `archive_entry_free'
/usr/bin/ld: create.c:(.text+0x7f4): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0x87a): undefined reference to `archive_read_data_block'
/usr/bin/ld: create.c:(.text+0x89e): undefined reference to `archive_write_data'
/usr/bin/ld: create.c:(.text+0x8ee): undefined reference to `archive_write_data'
/usr/bin/ld: create.c:(.text+0x921): undefined reference to `archive_entry_set_perm'
/usr/bin/ld: create.c:(.text+0x934): undefined reference to `archive_entry_filetype'
/usr/bin/ld: create.c:(.text+0x947): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0x985): undefined reference to `archive_entry_copy_pathname'
/usr/bin/ld: create.c:(.text+0x994): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0x99f): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0x9ce): undefined reference to `archive_entry_set_perm'
/usr/bin/ld: create.c:(.text+0x9f5): undefined reference to `archive_read_disk_set_metadata_filter_callback'
/usr/bin/ld: create.c:(.text+0xa04): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0xa34): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xa3f): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xa74): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xa8f): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xab4): undefined reference to `archive_read_disk_descend'
/usr/bin/ld: create.c:(.text+0xb5e): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0xb9b): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xbcc): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xbd7): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xc10): undefined reference to `archive_entry_set_perm'
/usr/bin/ld: create.c:(.text+0xc18): undefined reference to `archive_entry_filetype'
/usr/bin/ld: create.c:(.text+0xc3c): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xc61): undefined reference to `archive_entry_pathname'
/usr/bin/ld: create.c:(.text+0xc94): undefined reference to `archive_read_close'
/usr/bin/ld: create.c:(.text+0xc9c): undefined reference to `archive_read_free'
/usr/bin/ld: create.c:(.text+0xca4): undefined reference to `archive_entry_free'
/usr/bin/ld: create.c:(.text+0xd06): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0xd3b): undefined reference to `archive_read_disk_descend'
/usr/bin/ld: /tmp/ccjzrRZJ.o: in function `kindle_create_ota_update':
create.c:(.text+0xe0b): undefined reference to `demunger'
/usr/bin/ld: create.c:(.text+0xe26): undefined reference to `md5_sum'
/usr/bin/ld: create.c:(.text+0xe43): undefined reference to `md'
/usr/bin/ld: create.c:(.text+0xe73): undefined reference to `munger'
/usr/bin/ld: create.c:(.text+0xeac): undefined reference to `md5_sum'
/usr/bin/ld: /tmp/ccjzrRZJ.o: in function `kindle_create_recovery':
create.c:(.text+0x1031): undefined reference to `demunger'
/usr/bin/ld: create.c:(.text+0x104c): undefined reference to `md5_sum'
/usr/bin/ld: create.c:(.text+0x1069): undefined reference to `md'
/usr/bin/ld: create.c:(.text+0x109b): undefined reference to `munger'
/usr/bin/ld: create.c:(.text+0x10dc): undefined reference to `md5_sum'
/usr/bin/ld: /tmp/ccjzrRZJ.o: in function `kindle_create_main':
create.c:(.text+0x123c): undefined reference to `nettle_rsa_private_key_init'
/usr/bin/ld: create.c:(.text+0x1254): undefined reference to `nettle_rsa_keypair_from_sexp'
/usr/bin/ld: create.c:(.text+0x16ad): undefined reference to `nettle_rsa_privkey_from_pem'
/usr/bin/ld: create.c:(.text+0x179f): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x1a95): undefined reference to `get_bundle_version'
/usr/bin/ld: create.c:(.text+0x1bc5): undefined reference to `nettle_rsa_private_key_clear'
/usr/bin/ld: create.c:(.text+0x2041): undefined reference to `archive_match_new'
/usr/bin/ld: create.c:(.text+0x2049): undefined reference to `archive_entry_new'
/usr/bin/ld: create.c:(.text+0x208a): undefined reference to `archive_match_exclude_pattern'
/usr/bin/ld: create.c:(.text+0x20a6): undefined reference to `archive_entry_copy_pathname'
/usr/bin/ld: create.c:(.text+0x20b1): undefined reference to `archive_match_path_excluded'
/usr/bin/ld: create.c:(.text+0x20c2): undefined reference to `archive_entry_free'
/usr/bin/ld: create.c:(.text+0x20ca): undefined reference to `archive_match_free'
/usr/bin/ld: create.c:(.text+0x2131): undefined reference to `kt_tempdir'
/usr/bin/ld: create.c:(.text+0x22e0): undefined reference to `get_bundle_version'
/usr/bin/ld: create.c:(.text+0x2333): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x2391): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x247c): undefined reference to `get_bundle_version'
/usr/bin/ld: create.c:(.text+0x25fd): undefined reference to `convert_device_id'
/usr/bin/ld: create.c:(.text+0x270a): undefined reference to `kt_tempdir'
/usr/bin/ld: create.c:(.text+0x2746): undefined reference to `kt_tempdir'
/usr/bin/ld: create.c:(.text+0x279c): undefined reference to `archive_write_new'
/usr/bin/ld: create.c:(.text+0x27a7): undefined reference to `archive_write_add_filter_gzip'
/usr/bin/ld: create.c:(.text+0x27af): undefined reference to `archive_write_set_format_gnutar'
/usr/bin/ld: create.c:(.text+0x27bc): undefined reference to `archive_write_set_bytes_per_block'
/usr/bin/ld: create.c:(.text+0x27c9): undefined reference to `archive_write_set_bytes_in_last_block'
/usr/bin/ld: create.c:(.text+0x27d4): undefined reference to `archive_write_open_fd'
/usr/bin/ld: create.c:(.text+0x28f3): undefined reference to `archive_write_close'
/usr/bin/ld: create.c:(.text+0x28fb): undefined reference to `archive_write_free'
/usr/bin/ld: create.c:(.text+0x2a95): undefined reference to `archive_write_close'
/usr/bin/ld: create.c:(.text+0x2a9d): undefined reference to `archive_write_free'
/usr/bin/ld: create.c:(.text+0x2bf5): undefined reference to `nettle_rsa_private_key_clear'
/usr/bin/ld: create.c:(.text+0x2e6b): undefined reference to `demunger'
/usr/bin/ld: create.c:(.text+0x2e8a): undefined reference to `md5_sum'
/usr/bin/ld: create.c:(.text+0x2eac): undefined reference to `md'
/usr/bin/ld: create.c:(.text+0x2f2c): undefined reference to `md'
/usr/bin/ld: create.c:(.text+0x2fa8): undefined reference to `munger'
/usr/bin/ld: create.c:(.text+0x317c): undefined reference to `demunger'
/usr/bin/ld: create.c:(.text+0x319b): undefined reference to `md5_sum'
/usr/bin/ld: create.c:(.text+0x31bd): undefined reference to `md'
/usr/bin/ld: create.c:(.text+0x337a): undefined reference to `munger'
/usr/bin/ld: create.c:(.text+0x345d): undefined reference to `convert_board_id'
/usr/bin/ld: create.c:(.text+0x346c): undefined reference to `convert_platform_id'
/usr/bin/ld: create.c:(.text+0x382d): undefined reference to `kt_tempdir'
/usr/bin/ld: create.c:(.text+0x3a72): undefined reference to `md5_sum'
/usr/bin/ld: create.c:(.text+0x3b57): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0x3bc6): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x3cb5): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x3dbb): undefined reference to `convert_platform_id'
/usr/bin/ld: create.c:(.text+0x3ddf): undefined reference to `convert_board_id'
/usr/bin/ld: create.c:(.text+0x41f3): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x425d): undefined reference to `md5_sum'
/usr/bin/ld: create.c:(.text+0x4281): undefined reference to `md5_sum'
/usr/bin/ld: create.c:(.text+0x4424): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x46a3): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x4771): undefined reference to `archive_entry_free'
/usr/bin/ld: create.c:(.text+0x477b): undefined reference to `archive_match_free'
/usr/bin/ld: create.c:(.text+0x480f): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x4893): undefined reference to `convert_board_id'
/usr/bin/ld: create.c:(.text+0x48a2): undefined reference to `convert_platform_id'
/usr/bin/ld: create.c:(.text+0x48f7): undefined reference to `convert_platform_id'
/usr/bin/ld: create.c:(.text+0x491b): undefined reference to `convert_board_id'
/usr/bin/ld: create.c:(.text+0x4b43): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x4d7e): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x51a1): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x5245): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x542c): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: /tmp/ccjzrRZJ.o:create.c:(.text+0x5570): more undefined references to `kt_with_unknown_devcodes' follow
/usr/bin/ld: /tmp/ccjzrRZJ.o: in function `kindle_create_main':
create.c:(.text+0x5c57): undefined reference to `archive_error_string'
/usr/bin/ld: create.c:(.text+0x77c6): undefined reference to `from_base'
/usr/bin/ld: create.c:(.text+0x77cc): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x77dc): undefined reference to `convert_device_id'
/usr/bin/ld: create.c:(.text+0x7869): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x787f): undefined reference to `convert_device_id'
/usr/bin/ld: create.c:(.text+0x798e): undefined reference to `convert_device_id'
/usr/bin/ld: create.c:(.text+0x7a02): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x7a0c): undefined reference to `convert_device_id'
/usr/bin/ld: create.c:(.text+0x7a73): undefined reference to `from_base'
/usr/bin/ld: create.c:(.text+0x7a79): undefined reference to `kt_with_unknown_devcodes'
/usr/bin/ld: create.c:(.text+0x7a8a): undefined reference to `convert_device_id'
collect2: error: ld returned 1 exit status
make: *** [<builtin>: create] Error 1

[NiLuJe]

That is not how this is supposed to work (you're mixing up make targets with... whatever you're trying to do here), and even if you were doing it the right way, it won't work, unless you're already running a patched kernel, which you're not, since you're currently running a brick ^^.

(Because the factory/recovery updater is handled via the kernel's initrd recovery shell, and that one obviously doesn't recognize our signing key).

As a sidebar, you don't need to build KindleTool, there are binaries available in the snapshots thread.

As a second sidebar, fastboot images have *nothing* to do with Kindle update packages in the first place. So, that's a big nope on *at least* three fronts.

[csakakirc]

Originally Posted by NiLuJe

That is not how this is supposed to work (you're mixing up make targets with... whatever you're trying to do here), and even if you were doing it the right way, it won't work, unless you're already running a patched kernel, which you're not, since you're currently running a brick ^^.

(Because the factory/recovery updater is handled via the kernel's initrd recovery shell, and that one obviously doesn't recognize our signing key).

As a sidebar, you don't need to build KindleTool, there are binaries available in the snapshots thread.

As a second sidebar, fastboot images have *nothing* to do with Kindle update packages in the first place. So, that's a big nope on *at least* three fronts.

Thanks for the feedback about my "patchwork", I've tried my best going knees deep in the forum, I will leave that KindleTool for the pros for now.

Should I install the downloaded binary with loady via TTL like I saw in the other post?

[NiLuJe]

My understanding is that what you did is essentially a one-way street to the waste basket.

That said, this is *absolutely not* my area of expertise, and there may have been vague attempts to recover from that in the past. Emphasis on past. Meaning, I sure as hell don't remember any of the details, I don't even remember if they were successful, and they may have only applied to much older devices, that didn't work *at all* like yours.

[geek1011]

Originally Posted by NiLuJe

My understanding is that what you did is essentially a one-way street to the waste basket.

That said, this is *absolutely not* my area of expertise, and there may have been vague attempts to recover from that in the past. Emphasis on past. Meaning, I sure as hell don't remember any of the details, I don't even remember if they were successful, and they may have only applied to much older devices, that didn't work *at all* like yours.

I'm not sure how this works on Kindles (I don't have one), but u-boot is often built with a factory image option. This is usually through fastboot over USB or over the serial console. Be extremely careful while doing this, since it's possible to make the situation worse with this if you don't do it right the first time. The i.mx mfgtool might also work.

[csakakirc]

@NiLuJe Thanks for clarifying that I am causing chaos in the command line for myself. I went through the readme again and realized that I missed the "make install" step, that's why I ended up mixing the make and the arguments for the KindleTool.
If I want to reflash the diags_kernel partition the following line gave me the right binaries?

kindletool create recovery2 kt3w * ../diags_kernel.bin

@geek1011 That means I am on the right way, just the commands are failing like this:

Spoiler:

c:\Users\kirc5>fastboot pass
turning on led...
FAILED (command write failed (No error))
finished. total time: 0.002s

c:\Users\kirc5>fastboot pass
turning on led...
FAILED (command write failed (No error))
finished. total time: 0.001s

c:\Users\kirc5>fastboot continue
resuming boot...
FAILED (command write failed (No error))
finished. total time: 0.002s

c:\Users\kirc5>fastboot continue
resuming boot...
FAILED (command write failed (No error))
finished. total time: 0.008s

c:\Users\kirc5>fastboot check diags_kernel
checking 'diags_kernel'...
FAILED (command write failed (No error))
finished. total time: 0.002s

The device now already just a paperweight, I wil try what I can do, thanks for the cooperation

[NiLuJe]

Originally Posted by csakakirc

@NiLuJe Thanks for clarifying that I am causing chaos in the command line for myself. I went through the readme again and realized that I missed the "make install" step, that's why I ended up mixing the make and the arguments for the KindleTool.
If I want to reflash the diags_kernel partition the following line gave me the right binaries?

kindletool create recovery2 kt3w * ../diags_kernel.bin

No. Kindle update packages have *nothing* to do with fastboot images.

Originally Posted by csakakirc

@geek1011 That means I am on the right way, just the commands are failing like this:

Spoiler:

c:\Users\kirc5>fastboot pass
turning on led...
FAILED (command write failed (No error))
finished. total time: 0.002s

c:\Users\kirc5>fastboot pass
turning on led...
FAILED (command write failed (No error))
finished. total time: 0.001s

c:\Users\kirc5>fastboot continue
resuming boot...
FAILED (command write failed (No error))
finished. total time: 0.002s

c:\Users\kirc5>fastboot continue
resuming boot...
FAILED (command write failed (No error))
finished. total time: 0.008s

c:\Users\kirc5>fastboot check diags_kernel
checking 'diags_kernel'...
FAILED (command write failed (No error))
finished. total time: 0.002s

The device now already just a paperweight, I wil try what I can do, thanks for the cooperation

You can't trust the return status of fastboot commands on Kindle, even on a sane device. As @geek1011 said, you might have to go one level closer to the metal (i.e., mfgtool).

[csakakirc]

I have a working and jailbreaked K5 around, if I use the backup script made by kcnc1, is there a chance the diags_kernel.bin will be compatible with the KT3?

[NiLuJe]

None whatsoever, it's not the same SoC.

[csakakirc]

Originally Posted by NiLuJe

None whatsoever, it's not the same SoC.

Thanks for verifying it!

I tried MFGtool from this thread, but it cannot see the device. When I tried to configure it, the GUI just exited on the USB ports tab every time. But at least it has the 3 binaries already included, which I could use in other tool.

Next try will be to check out the MFGtool 3.0 and try to access the brick with that. Along I already have the imx_usb cloned and compiled to try it out, but still needs some reading in the topic.

I found a thread from 3 years ago where someone faced almost the same situation and stuck with a brick. In the end the device was resurrected with working "main OS" and without a functioning diags partition.

knc1 is a war veteran this close to the metal, cleared some things already for me as well with all these helpful posts in so many threads, if you are reading this, sorry for the typo in your name in some upper post, I cannot edit my posts yet.

My question is, how can I get the uImage out of the update binaries to use it like this?

Sorry if I mix up definitions, my knowledge about this topic is barely scratching the surface, but this forums and its members is really helping and kind. Thanks for your time spent on my problem

[NiLuJe]

You can pull the *main* kernel and rootfs out of an official update via KindleTool (e.g., kindletool extract blah.bin out).

But for diags (assuming the KT3 still used an A/B layout, I can never remember :s), you'll need actual DIY backups.

[csakakirc]

It took me a couple of tries, but I managed to flash the uImage from 5.8.0 via UART, got back the recovery menu.

My KT3 came back from death, thanks to this community

[3ldn1k]

Hi, there.
If someone still needs Kindle kt3 basic partitions backup, (uart method) - i have full, for our community (except huge mainsys.bin):
https://drive.google.com/file/d/1qeP...ew?usp=sharing

and here is diagkern.bin only:
https://drive.google.com/file/d/1CUw...ew?usp=sharing

[cnboy]

It took me a couple of tries, but I managed to flash the uImage from 5.8.0 via UART, got back the recovery menu.

My KT3 came back from death, thanks to this community

can you tell me how to do this? i need your help.