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Old 11-30-2017, 09:23 PM   #1
Jarmex
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Posts: 7
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Join Date: Jan 2017
Device: Kindle Basic 2014 (KT2)
Bricked KT2 - "Invalid board id"

Hi all,

I've managed to make a bit of a mess of my KT2. I managed to install the wrong image when jailbreaking and now the Kindle refuses to boot, and I am not able to connect to it through USB. Cracked it open and attached a serial adapter to receive the following output:

Quote:
U-Boot 2009.08-lab126 (Aug 07 2014 - 00:52:13)

CPU: Freescale i.MX6 family TO0.0 at 996 MHz
Temperature: 29 C, calibration data 0x58250a5f
mx6sl pll1: 996MHz
mx6sl pll2: 528MHz
mx6sl pll3: 480MHz
mx6sl pll8: 50MHz
ipg clock : 66000000Hz
ipg per clock : 66000000Hz
uart clock : 80000000Hz
cspi clock : 60000000Hz
ahb clock : 132000000Hz
axi clock : 198000000Hz
emi_slow clock: 22000000Hz
ddr clock : 396000000Hz
usdhc1 clock : 198000000Hz
usdhc2 clock : 198000000Hz
usdhc3 clock : 198000000Hz
usdhc4 clock : 198000000Hz
MMC: FSL_ESDHC: 0,FSL_ESDHC: 1,FSL_ESDHC: 2
Board: Unknown
Boot Reason: [ POR ]
Boot Device: NAND
Board Id: <redacted board id>
S/N: <redacted serial number>
I2C: ready
Invalid board id! Can't determine system type for RAM init.. bailing!
DRAM: 0 kB
Using default environment

In: serial
Out: serial
Err: serial
Quick Memory Test 0x80000000, 0xffff0000
POST done in 4 ms
Unfortunately I am not able to do anything at this point - no input into the putty terminal will bring up a console, I've tried hitting enter multiple times on boot, but I guess it hasn't got to the autoboot boot step to be able to cancel it.

I understand fastboot will help me here, however I don't know how I can get to fastboot - I am not able to bring up the uboot console, and I cannot enter USB Debugging mode from the Kindle as it is not recognised by the PC (I hear Window's connect tone, followed immediately by the disconnect).

Is there anything I can do at this point? Any advice definitely welcomed, thank you in advance!
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Old 12-01-2017, 09:26 AM   #2
knc1
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Posts: 15,410
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Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
You have a used screen for sale.
Quote:
Originally Posted by Jail Break, step #1
Positively identify the nickname of your Kindle model from the serial number.
Use four of the first six characters, older Kindles: xxxx xx, newer Kindles: xx xxxx in this table:
Serial Number Nicknames
The factory images **are not** model locked, your care taken with this step is your Kindle's only protection!
If not found in the table, STOP HERE and tell us.
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