Recover hard-bricked Max Lumi 2

[richard.black]

Hey Renete, here's the available partitions:

recovery filesystem table
================
0 /system
1 /system_ext
2 /vendor
3 /product
4 /data
5 /metadata
6 /sdcard
7 /boot
8 /misc
9 /tmp

I saw your tools and installed Zadig driver, but I can't access EDL anymore.
The recovery partitions in update.zip are:

Anti-rollback 2024-09-10 11:04:34

Partition        New    Operations
--------------  ------  ----------------------------------------
abl              148 k  REPLACE_XZ[1]
boot            96.0 M  REPLACE[5], REPLACE_XZ[15], REPLACE_BZ[28]
dtbo            8.00 M  REPLACE_XZ[1], REPLACE_BZ[3]
modem           38.6 M  REPLACE_XZ[20]
product          563 M  REPLACE[6], REPLACE_XZ[269], REPLACE_BZ[7]
recovery        96.0 M  REPLACE[5], REPLACE_XZ[19], REPLACE_BZ[24]
system          2.04 G  REPLACE[65], REPLACE_XZ[963], REPLACE_BZ[15]
system_ext       292 M  REPLACE[12], REPLACE_XZ[131], REPLACE_BZ[3]
vbmeta          8.00 k  REPLACE_XZ[1]
vbmeta_system   4.00 k  REPLACE_XZ[1]
vendor           493 M  REPLACE[1], REPLACE_XZ[245], REPLACE_BZ[1]
xbl             2.99 M  REPLACE_XZ[2]

Thanks

[richard.black]

Fastboot throws this error:

.\fastboot.exe update C:\Users\user\update.zip
--------------------------------------------
Bootloader Version...: unknown
Baseband Version.....:
Serial Number........: XXXXXXXX
--------------------------------------------
archive does not contain 'android-info.txt'
fastboot: error: could not read android-info.txt

[richard.black]

What should I do now?

[Renate]

I asked you a few messages back to print out a GPT.
Please use my EDL client (in my sig) as I don't know/care about other people's implementations.

[richard.black]

I just can't get into EDL, I'm sorry but I don't know how to print out a GPT table without EDL.
I tried every method on https://temblast.com/edl.htm. Fastboot says:

fastboot: usage: unknown reboot target edl

What? You're telling me that you don't know what "status 1" means???
(I don't either.)

I figured adb sideload error status 1 means I can't downgrade from 3.5.4 to 3.5.4.

[Renate]

Go to recovery.

adb reboot edl

[richard.black]

Go to recovery.

.\adb.exe reboot edl
error: no devices/emulators found

[Renate]

You were just using adb sideload in recovery and now there's no adb?

You may be so messed up now you can only get to EDL by either EDL test points or by wiping out some necessary partition like xbl.

You can get to recovery and the menu shows up?

You can't boot to the regular system at all? No adb?

You're right, there is no edl command in this fastboot. (Although some others do.)

[richard.black]

You were just using adb sideload in recovery and now there's no adb?

Yeah, basically. There's no ADB but I can use adb sideload.

You may be so messed up now you can only get to EDL by either EDL test points or by wiping out some necessary partition like xbl.

I'm not confident that there is any EDL on my device. OR xbl partition, for that matter.

You can get to recovery and the menu shows up?

Yes.

Android Recovery
ONYX/BOOX/BOOX
11/RKQ1.210614.002/200
userdebug/release-keys
Use volume up/down and power.
WARNING: Previous installation has failed.
  You device may fail to boot if you reboot or power off now.
-----
Reboot system now
Reboot to bootloader
Enter fastboot
Apply update from ADB // adb sideload works here, not adb
Apply update from SD card
Wipe data/factory reset
Mount /system
View recovery logs
Run graphics test
Run locale test
 Power off
-----

You're right, there is no edl command in this fastboot. (Although some others do.)

some others do?

[Renate]

Of course there is EDL on your device. It's in ROM on the processor chip. And xbl, abl if you can get to recovery.

This is an older device. I'd probably recommend that you open it up and find the EDL test points.

Other manufacturers might have "fastboot oem edl" but Onyx doesn't.

[richard.black]

I opened up my tab. Now I don't know which of the 20 contact pads are the EDL test points I'm looking for? Can you explain if you know? And the next process I need to do, too.

[Renate]

A good photo will help.
Do you have a DVM? With "Diode test"?
Or any resistors?

[richard.black]

Hey!
Here are the photos of my Max Lumi 2.

Do you have a DVM? With "Diode test"?

Yes

[Renate]

Well, it seems obvious enough.

C, D, Gnd are your UART. Whichever C or D measures 1.8V is TX, the other is RX.

A, B are your EDL test points.
Normally (and only if I am right) could you short them together.
It's better to play safe.
Measure the voltage, one is 1.8V the other is 0V.
Put your DVM in diode test, black to a "sardine can", red to the 0V A or B, long power button press with USB connected.

[richard.black]

Hey!
I need your help here. On my device,
A 1.8V
B 0V
C 0V
D 1.8V

Put your DVM in diode test, black to a "sardine can", red to the 0V A or B, long power button press with USB connected.

The device isn't going to EDL mode, maybe because I didn't quite understand what you meant. Could you elaborate?
Thanks