Quote:
Originally Posted by Markismus
@ChriChri How did you trigger FEL mode?
Did you make any further progress?
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I need to take a break from looking into it, because I have to take care of other things (but I'll continue when time comes ;-) ).
To get into FEL mode I did the following:
- connected to my computer (linux) via usb
- pushed and hold power button (the one with the led) until device vanished from usb (reading dmesg) to make sure it is really switched off
- hold home button (the button all to the left below the display) and hit power button once to switch on
- in dmesg there should appear a different device (mine: idVendor=1f3a, idProduct=efe8, bcdDevice= 2.b3)
- FEL mode
Recompiling my sunxi-tools with the patched source mentioned here got me - what looks for me - valid answers from the device.
I extracted boot0 eGON from my devices eMMC image and tried to upload it using sunxi-fel and got corresponding messages in the serial console of my test board.
I found out the sunxi-package format that is used for the .uboot-file contained in the firmware package by pocketbook. It contains sections for u-boot, soc-cfg oder dtb. I guess it could be possible to extract informations needed to build a u-boot from scratch. There is also information on the sunxi-wiki on how to get informations.
Then I got stuck - cause: lack of knowledge
. Didn't know how to get a file containing SDL and uboot to upload to the device.
I decided to stop at this point and start again later with starting a device page for the board as proposed in the sunxi wiki. My hope would be to learn while doing so as much as I need to make a system boot via FEL/usb (hopefully with the help of the sunxi community).