Quote:
Originally Posted by knc1
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I guess we have to wait for someone who knows what that error code means.
...
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Googling "kindle u004" found this (highlights added):
Quote:
Originally Posted by NiLuJe
@geniusliu26:
U006: General failure (for official updates, generally a checksum error)
U004: No bundlefile (in the JB context, you used the wrong file for your FW version)
U007: Signature verification failure (JB is not installed)
You're gonna need to remember what you installed to 'fix' the official update. Checking the logs might help (;debugOn => ;dumpMessages => ;debugOff in the Home search bar).
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Quote:
Originally Posted by prakashbala
Here I see checksum are different, I believe the file is corrupted. Thanks for your help!!  I'm going to download again!! |
It was probably a corrupt firmware file that caused this U004 error (a side-effect of the bundelfile missing from download file truncation).
Based on successful downgrades by other users using this update file, a good copy (with correct MD5) should fix this problem.