[stack]

Originally Posted by knc1

So let's try booting the other operating system first and make sure there isn't anything there that could help this situation.
Perhaps Lab126 has an eMMC maintenance utility included there.

Spoiler:

   PINOT-WFO - System Diags
   ~~~~  1.12.547.231842  ~~~~ 
     pcbId:027220##########
~ S ~ Device Setting  
P) Touch Sensor Plate Test     
O) Operator test suite     
E) 511     
N) Misc individual diagnostics     
Y) nART factory test     
U) USB device mode     
H) Touch Hold Test     
I) USB Bundle Install     
D) Exit, Reboot or Disable Diags     
L) Lock diags screen     
X) Exit

N) Misc individual diagnostics:

~ C ~ Certification Test Mode  
I) Wifi Test     
G) Gas Gauge     
L) LED Test     
O) FrontLight test     
S) HallSensor detect     
V) Video Test     
T) Touch Sensor Menu     
N) MoviNand     
E) Power Test     
H) Adjust battery     
M) MoviNand/AdjBat/DisableDiags     
U) Utilities     
X) Exit

U) Utilities:

~ O ~ Format user partitions  
A) Erase waveform     
E) 511 with device info     
D) WAN Desense Test     
Z) Enable USBnet     
M) Mount nfs     
S) Stress Tests     
R) Run in Test     
T) ORT Discharge     
W) WIFI Bundle Install     
F) Fastboot Bundle Install     
X) Exit

Nothing in Diags that immediately jumps out at me to attempt. Any suggestions?

Originally Posted by knc1

Which reminds me, we need to make a copy of the Diags system before doing an "erase all" on the Kindle.

I didn't see a tutorial on backing up diags, should we do this now?