Thread: Newbie questions on KPW2
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Old 04-19-2014, 08:39 AM   #12
knc1
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Posts: 17,212
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Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
Quote:
Originally Posted by axelPW2 View Post
Thank you all for the good advice on browsers.

Today I have updated off-line via cable from v5.4.2. to 5.4.3.1, it went all right.
Out of curiosity I have tried to see if possible to downgrade back to 5.4.2 and have copied the previous update file to the Kindle. In a strange way the old update file is disappearing/getting deleted in the Kindle everytime I disconnect it from the computer. Is this normal?
Most likely answer: YES

The Kindle updater uses signed packages that are model locked.
If the package is not appropriate, it will be silently deleted.
You should be able to find more information in one of the log files.

Prior to very recent firmware revisions, the updater did not compare current vs. package firmware versions.
I.E: It would allow what was actually a down-grade in firmware version.

Evidently, the updater routine has been "enhanced" by Amazon/Lab126 to now prevent "down-grades" by using an older firmware packages.

Disclaimer: I do not own a PW2 - I have no direct knowledge of the current situation.
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