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Old 04-23-2022, 12:22 PM   #602
treedev
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Join Date: Apr 2022
Device: N514
Hi davidfor, could I also get a a copy of the Aura H2O image?
Recently got my hands on a Kobo Aura (N514) but it is unresponsive. Looking at the output of u boot over UART, it looks like the kernel is corrupt:
Code:
...
MMC read: dev # 2, block # 2048, count 8192 partition # 0 ... 
8192 blocks read: OK
## Booting kernel from Legacy Image at 70800000 ...
   Image Name:   r6836_#2039 Jul 30 10:07:41
   Created:      2013-07-30   2:07:45 UTC
   Image Type:   ARM Linux Kernel Image (uncompressed)
   Data Size:    1949916 Bytes =  1.9 MB
   Load Address: 70008000
   Entry Point:  70008000
   Loading Kernel Image ... OK
OK
  
Starting kernel ...

Uncompressing Linux...

uncompression error

 -- System halted
The "uncompression error" is something I have seen on other linux systems when the os image is corrupted or fails a crc-32 checksum.

A quick search in this thread and others (https://www.mobileread.com/forums/sh...d.php?t=286314) gives me hope that the H2O image should work with my N514.

I can confirm that holding the light button when powering on the N514 does appear to cause it to attempt to boot from the SD card. This appears in the u boot output with the light+power button combo:
Code:
...
MMC read: dev # 2, block # 1024, count 1 partition # 0 ...
1 blocks read: OK

**********************************


**  Boot from SD quick recovery **


**********************************

ram p=70000000,size=268435456
...
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