KT3 error when trying to boot into diagnostics mode

[Radsonpatrick]

Hello, can anyone help me with this problem? I'm trying to jb my Kindle but when I try to boot into diagnostics mode it gives me a "data abort" error and boots normally. The Kindle (KT3) is new and works just fine. No other kind of hacks or modifications have been performed on it. I have searched the forum
and on google, but I can't find anything.
i'm need Serial downgrade but not have tutorial, your have?
Here's the part of the log:

U-Boot 2014.04 (Apr 08 2021 - 09:44:35)

CPU:   Freescale i.MX6SL rev1.4 at 792 MHz
CPU:   Temperature 34 C, calibration data: 0x5a05225f
Reset cause: POR
FRED::: EXTCSD177=0, 179=48FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
Board: Heisenberg
Board Id: P00118078243032W
S/N: G000KA05825305V7
I2C:   ready
DRAM:  MR5=0x6,MR6=0x3 512 MiB
WARNING: Caches not enabled
MMC:   FRED::: EXTCSD177=0, 179=48FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
REBOOTMODE: 0
using default bootcmdNormal Boot
Hit any key to stop autoboot:  0
uboot > bootm 0xE41000
data abort
pc : [<9ffce81c>]          lr : [<9ffc46b4>]
sp : 9fcb9b20  ip : 9fcba259     fp : 9fcba100
r10: 9fcba234  r9 : 9fcb9cdc     r8 : 00000001
r7 : 00000000  r6 : 0000070f     r5 : 00e41000  r4 : 9ffef3f8
r3 : 00000000  r2 : 00000010     r1 : 00000000  r0 : 00e41000
Flags: nZCv  IRQs off  FIQs off  Mode SVC_32
Resetting CPU ...

resetting ...

[hius07]

Try this
https://www.mobileread.com/forums/sh...43#post4133943

[Radsonpatrick]

Originally Posted by hius07

Try this
https://www.mobileread.com/forums/sh...43#post4133943

Thank you man. is perfect