02-13-2012, 04:47 PM | #1 |
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Device: Kindle Touch
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Another one self-bricked KT
Hi All!
Couple of days ago I tried to download a book from internet with kindle's browser (thru wifi) and when I confirmed downloading my KT stopped responding. I tried to reset it (20 sec hold button) - no change on screen. But kindle seems to be rebooted - when it connected to PC its USB drive disappears, and after reconnecting with cable it appears again. I tried to get log for diagnostics with data.tar.gz method but got only error "can't create /mnt/us/log.txt: Invalid argument" in runme.err I'm not strong with linux, so dont know what's wrong with getting log, please help me to define the next step. Think that system still working, because USB connection to kindle is stable; but something wrong in startup ( strange for me there is no changes on screen at all - still KT's browser with download confirmation page). Help me, please! Thnx in advance |
02-14-2012, 05:02 AM | #2 |
Carpe diem, c'est la vie.
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It would help to see your runme.sh script that caused the error message that you described.
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02-14-2012, 05:16 AM | #3 |
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I used runme.sh from wiki without change:
------------------------------- test -f /mnt/us/RUNME.done && exit mntroot rw showlog > /mnt/us/log.txt mntroot ro touch /mnt/us/RUNME.done -------------------------------- |
02-14-2012, 05:54 PM | #4 | |
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Quote:
You can load it into a programmer's editor that supports converting line endings, and save it as a Unix file, or strip the CR characters with a conversion utility. |
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02-15-2012, 08:15 AM | #5 |
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Thanx, I will check runme.sh for CR's
By the way, maybe there there is a sense to update firmware to 5.0.3 in this state? Maybe update will refresh system files and device will come to life? Or it can be irrevocably bricked? |
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02-15-2012, 09:16 AM | #6 | |
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Quote:
I also had a k4nt that was bricked by an official 4.0.1 amazon update. In my case and in some of the cases reported for 5.0.3, the kindles did not have jailbreak or hacks installed. It appears that amazon's "differential update" method used on the new kindles is risky at best... Last edited by geekmaster; 02-15-2012 at 09:25 AM. |
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02-15-2012, 02:55 PM | #7 |
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Yea, you were quite right about 0D bytes in runme.sh
I got log, it seems to have events from 13/02/2012 (attached) found very suspisious lines: 700101:000427 papyrus 1-0048: PMIC PAPYRUS for eInk display ... 110801:020100 Retrying Papyrus enable 110801:020100 _regulator_enable: failed to enable DISPLAY: -110 110801:020100 mxc_epdc_fb mxc_epdc_fb: Unable to enable DISPLAY regulator.err = 0xffffff92 maybe because of it I see display frozen? Is it hardware problem? |
02-18-2012, 06:16 AM | #8 |
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Hi, Geekmaster!
No hope to revive my kindle? |
02-18-2012, 02:25 PM | #9 |
Carpe diem, c'est la vie.
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I just finished my code to boot kindle touch or k4nt into diags or fastboot mode in USB Downloader (also known as USB HID or USB Recovery) mode. I will post it in the k4nt and touch wikis, then post an announcement in a new thread (and here).
In diags mode you can export the USB Drive to make changes to it (add RUNME.sh repair script). On the k4nt you can open SSH in diags, or on the touch you can push a reverse shell in diags. From a shell you can examine and repair what prevents main from booting. You can also restore mmcblk0p1.img on the USB drive to /dev/mmcblk0p1 with a "dd command. Or, in fastboot mode you can reflash the main partition from mmcblk0p1.img on your host PC using yifanlu's kindle fastboot tool. Beware that these methods are risky if you are not careful. Do not flash the wrong partition. Do not delete the wrong scripts. I will provide instructions and tools. Last edited by geekmaster; 02-18-2012 at 02:29 PM. |
02-19-2012, 10:17 PM | #10 |
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Here is another tool to help repairing kindle touch and k4nt:
https://www.mobileread.com/forums/sho...d.php?t=169645 |
02-21-2012, 04:59 PM | #11 |
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I'm still at the same point.
Tried to load diags and fastboot modes with MFG tool - nothing changed on screen. Ran factory reset script - nothing changed again (but reset was done - mmcblk0p4 was cleared to initial state) Now the only conclusion - it's hardware problem? |
02-21-2012, 05:05 PM | #12 | |
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Quote:
Last edited by geekmaster; 02-21-2012 at 05:07 PM. |
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02-23-2012, 06:21 AM | #13 |
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Well, I've surrendered further struggle with it.
Sent it to Amazon for replacement. Anyway many thanks for help GeekMaster, I have learned much about device |
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