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Old 04-01-2022, 08:18 AM   #1
AlexPartridge
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Device: Kindle 4
Bricked Kindle 4, No Fastboot/Diags (CONT.)

Hello everyone,

I posted a little while ago in another part of these forums back in mid January trying to get some help with recovering my Kindle 4 (Non-Touch) after the Kubrick and MfgTool failed to yield any results.

If you want to read a little more on the background, the thread this here:
https://www.mobileread.com/forums/sh...d.php?t=344416

The user there suggested connecting to the serial port to get a better idea of what was going on, so in the time since, I ordered a USB to Serial FTDI Adaptor with a 1.8v mode, and have finally been able to get something out of the Kindle. But sadly, it seems like there is still a lot of work to do.

Simply turning on the Kindle does nothing but using Kubrick tool, although it doesn't get past the 'Waiting for Fastboot' page, the serial monitor spits out the following:

Code:
U-Boot 2009.08-lab126 (Feb 19 2012 - 05:03:11)

CPU:   Freescale i.MX50 family 1.1V at 800 MHz
mx50 pll1: 800MHz
mx50 pll2: 400MHz
mx50 pll3: 216MHz
ipg clock     : 50000000Hz
ipg per clock : 50000000Hz
uart clock    : 24000000Hz
ahb clock     : 100000000Hz
axi_a clock   : 400000000Hz
axi_b clock   : 200000000Hz
weim_clock    : 100000000Hz
ddr clock     : 800000000Hz
esdhc1 clock  : 80000000Hz
esdhc2 clock  : 80000000Hz
esdhc3 clock  : 80000000Hz
esdhc4 clock  : 80000000Hz
MMC:  FSL_ESDHC: 0, FSL_ESDHC: 1
Err -19 on send ext_csd

Warning: fail to get ext csd for MMC!
idme_get_var ERROR: couldn't switch to boot partition
Err -19 on send ext_csd

Warning: fail to get ext csd for MMC!
idme_get_var ERROR: couldn't switch to boot partition
Board: Unknown
Boot Reason: [POR]
Boot Device: MMC
Board Id: 0000000000000000
S/N: 0000000000000000
*** TODO: Dump protected MMC here ***
Invalid board id!  Can't determine system type for RAM init.. bailing!
DRAM:   0 kB
Using default environment
If there is anyone who can help shed some light on what has gone wrong and can help me get this kindle back up and running, it would be greatly appreciated!

Thank you very much in advance for any insight you may be able to provide!
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Old 04-02-2022, 12:16 PM   #2
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Unfortunately, it looks like the device's flash memory has been damaged. This is repairable but requires bga soldering skills. Besides, you lost all your identification numbers so you wouldn't register any more reader with Amazon anyway. The only reasonable way out is to buy a reader with a broken display and move the motherboard from it.
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Old 04-02-2022, 04:04 PM   #3
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Quote:
Originally Posted by eddie.t.h View Post
Unfortunately, it looks like the device's flash memory has been damaged. This is repairable but requires bga soldering skills. Besides, you lost all your identification numbers so you wouldn't register any more reader with Amazon anyway. The only reasonable way out is to buy a reader with a broken display and move the motherboard from it.
There's a good chance that the broken Kindle may be blacklisted. If that's the case, then it won't be able to be registered either. Given that it's a Kindle 4, the solution is to buy a new Kindle.
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