Thread: about U-BOOT
View Single Post
Old 07-09-2014, 09:27 AM   #2
knc1
Going Viral
knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.knc1 ought to be getting tired of karma fortunes by now.
 
knc1's Avatar
 
Posts: 17,212
Karma: 18210809
Join Date: Feb 2012
Location: Central Texas
Device: No K1, PW2, KV, KOA
Quote:
Originally Posted by Jackie Im View Post
Hi~
I use kindle paperwhite 2nd.
I would like to change uboot to new uboot.
and i would like to "mmc write" command but kindle's uboot do not support.
please let me know how to do.

thank you.
That Kindle has two different builds of u-boot.
Have you tried them both?
(The more complete build is named: BIST on the first level u-boot's menu.)

- - - -

On earlier Kindles, installing u-boot was done with the erase-all command.
You will have to read the sources that Amazon has released to see if that is still true.

Ah, what your looking for in the sources:
The erase-all command (after forgetting to save the device and personal info sections) did just that, erased all of the mmc and then unlocked the u-boot storage area and copied the then executing u-boot into mmc followed by re-locking that area.

- - - -

BIG NOTE:
The Paperwhite gen 2 is not the ideal device to be used for a first-time explorer.
(Since you had to ask, you must just be starting out. Starting out on this device is a really big "bad idea".)

Last edited by knc1; 07-09-2014 at 09:34 AM.
knc1 is offline   Reply With Quote