Firmware Update Is there a way to roll back to an older firmware?

RobertJSawyer · 10-30-2012, 12:57 AM

Since upgrading my Kindle Keyboard Wi-Fi and my Kindle Keyboard 3G to firmware 3.4, I've discovered that Amazon is now serving me all books in AZW3 format (new titles and also old titles), whereas it used to deliver them in Mobi format. I prefer Mobi format, since the hack that re-instates the "Justification: Left / Full" option on the font menu only works with Mobi-format books (it's grayed out if the book in question is in AZW3 format); I'm hoping by rolling back to an earlier firmware, Amazon will default to delivering books in Mobi format again. Thanks!

hawhill · 10-30-2012, 07:42 AM

No official way. The update packages are incremental and not reversible.

That said, we have full backup and restore facilities explored in the developer's corner. It's well tested, but of course on your own risk. A downgrade is possible that way. Look at ATK or k3flasher for doing this. But remember: a) your own risk, b) charge your Kindle before messing with this, c) backup your kindle before flashing something else to it, d) double check parameters. You'll find more info in the developer's corner in the debrick threads.

eureka · 10-30-2012, 09:07 AM

Note, that after rollbacking (by any way) your KK will be a target for receiving automatic update to 3.4 again. AFAIK, there is no solution to stop it at the moment (I may be wrong).

baggyrinkle · 10-30-2012, 10:34 AM

Thanks, I'm glad you mentioned that. I checked and noticed that on AWZ3 books I cant change the fonts on my K3. However, if you strip the drm and convert to mobi in Calibre, you can restore the fonts and such. Another reason DRM sucks! Which is a lot easier than rolling back your FW.

geekmaster · 10-30-2012, 03:38 PM

Quote:

Originally Posted by eureka

Note, that after rollbacking (by any way) your KK will be a target for receiving automatic update to 3.4 again. AFAIK, there is no solution to stop it at the moment (I may be wrong).

Perhaps you can prevent an update by installing a hack that makes the update fail to install. For example, on the K4, the screensaver hack can do that.

RobertJSawyer · 10-31-2012, 02:33 PM

Thanks, everyone! Can anyone confirm my suspicion that it's the updating to firmware 3.4 that causes the Kindle Keyboard to start receiving books in AZW3 format? That is, was it 3.4 that added support for AZW3 to the Kindle Keyboard? Much appreciated!

NiLuJe · 10-31-2012, 05:16 PM

@RobertJSawyer: Yep. KF8 support was introduced in FW 3.4 on this device.

montalex · 11-01-2012, 07:38 AM

Perhaps simpler to convert AZW3 to mobi with Calibre? Search Apprentice Alf, as there is no posting on removing DRM here, but it is very simple to do. I, too, don't like the default margins, and always set mine to 10.

10-30-2012, 12:57 AM	#1
RobertJSawyer Zealot Posts: 108 Karma: 545364 Join Date: Jun 2006 Location: Toronto Device: Kobo Glo/Touch/Vox/WiFi, Kindle 3, Nook 1st ed, ECTACO jetBOOK-lite	Is there a way to roll back to an older firmware? Since upgrading my Kindle Keyboard Wi-Fi and my Kindle Keyboard 3G to firmware 3.4, I've discovered that Amazon is now serving me all books in AZW3 format (new titles and also old titles), whereas it used to deliver them in Mobi format. I prefer Mobi format, since the hack that re-instates the "Justification: Left / Full" option on the font menu only works with Mobi-format books (it's grayed out if the book in question is in AZW3 format); I'm hoping by rolling back to an earlier firmware, Amazon will default to delivering books in Mobi format again. Thanks! __________________ Hugo Award-winning Science Fiction writer Author of FlashForward and Triggers http://sfwriter.com

10-31-2012, 02:33 PM	#6
RobertJSawyer Zealot Posts: 108 Karma: 545364 Join Date: Jun 2006 Location: Toronto Device: Kobo Glo/Touch/Vox/WiFi, Kindle 3, Nook 1st ed, ECTACO jetBOOK-lite	Thanks, everyone! Can anyone confirm my suspicion that it's the updating to firmware 3.4 that causes the Kindle Keyboard to start receiving books in AZW3 format? That is, was it 3.4 that added support for AZW3 to the Kindle Keyboard? Much appreciated! __________________ Hugo Award-winning Science Fiction writer Author of FlashForward and Triggers http://sfwriter.com

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10-30-2012, 07:42 AM	#2
hawhill Guru Posts: 769 Karma: 1646497 Join Date: Nov 2010 Location: Goettingen, Germany Device: Kindle Paperwhite, Kindle 3 WiFi	No official way. The update packages are incremental and not reversible. That said, we have full backup and restore facilities explored in the developer's corner. It's well tested, but of course on your own risk. A downgrade is possible that way. Look at ATK or k3flasher for doing this. But remember: a) your own risk, b) charge your Kindle before messing with this, c) backup your kindle before flashing something else to it, d) double check parameters. You'll find more info in the developer's corner in the debrick threads.

10-30-2012, 09:07 AM	#3
eureka discoverer of principles Posts: 610 Karma: 1758576 Join Date: Dec 2011 Location: bath Device: Kindle Touch	Note, that after rollbacking (by any way) your KK will be a target for receiving automatic update to 3.4 again. AFAIK, there is no solution to stop it at the moment (I may be wrong).

10-30-2012, 10:34 AM	#4
baggyrinkle Enthusiast Posts: 25 Karma: 362 Join Date: Dec 2010 Location: Texas Device: Kindle3 Kindle4 Kindle Fire	Thanks, I'm glad you mentioned that. I checked and noticed that on AWZ3 books I cant change the fonts on my K3. However, if you strip the drm and convert to mobi in Calibre, you can restore the fonts and such. Another reason DRM sucks! Which is a lot easier than rolling back your FW.

10-31-2012, 05:16 PM	#7
NiLuJe BLAM! Posts: 2,895 Karma: 2267781 Join Date: Jun 2010 Location: Paris, France Device: Kindle 2i, 3g, 4, 5w & PW	@RobertJSawyer: Yep. KF8 support was introduced in FW 3.4 on this device.

11-01-2012, 07:38 AM	#8
montalex Addict Posts: 343 Karma: 517348 Join Date: Mar 2010 Device: Kindle 2i, Kindle Keyboard 3G	Perhaps simpler to convert AZW3 to mobi with Calibre? Search Apprentice Alf, as there is no posting on removing DRM here, but it is very simple to do. I, too, don't like the default margins, and always set mine to 10.


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