Quote:
Originally Posted by howtojb
then I tried something else, copy "update_KOA_5.7.4_initial.bin" to kindle, do NOT unplug usb cable, directly press power button and hold for 20 sceonds, KOA1 reboot, popup info"...kindle is update...please wait....", after half a minute, popup "...update is not successful ...error code is 15..."
I did same process for "update_kindle_oasis_5.9.7.bin",my kindle try to update FW, but faild, "...error code is 12..."
what that mean: when user copy update "bin" file to kindle, and do not unplug usb cable, and press power button for 20 sceonds, hard reboot kindle, kindle will try to run the "bin" file, of cause the file can not pass some kinde pre-check,popup error code.
that means, in above process, kindle try to execute user "bin" file, maybe someone in this forum can customizes a "bin" file, tricks the fw5.12.2 system, bypasses the pre-check, JB kindle system？ |
This used to work on 5.6.x but they already plugged that hole.
If we can create a custom "bin" file that can pass or bypass the validation check, I expect it will work with the regular UYK menu option as well. The problem is how to create that bin file in the first place without knowing Amazon's private key.