Pocketbook InkPad 3 internals

[sdfgg]

Originally Posted by Marco77

Sorry, not posting about fel / uboot / sunxi-package

I have put together a script to pull apart an emmc dump from the 740, into individual memory regions.
https://github.com/mchubby/pb740-inkpad-notes

Weeee~ nice graph: https://raw.githubusercontent.com/mc...ion-layout.png

Thank you for keeping updating us with your tinkering!

A related question, basically in order to be able to modify the look of the home screen, bar size (for time and page), open at startup options... and more its needed to get the dump, look at what files to modify, and then re-flash? (taking for granted that the modifications don't 'break' the device )

[ezdiy]

Originally Posted by sdfgg

Thank you for keeping updating us with your tinkering!

A related question, basically in order to be able to modify the look of the home screen, bar size (for time and page), open at startup options... and more its needed to get the dump, look at what files to modify, and then re-flash? (taking for granted that the modifications don't 'break' the device )

To edit theme files, you don't need to write files to the fw rom. The stock theme can be copied from /ebrmain/themes/ (something like Line.pbt or Modern.pbt). You can then modify its contents with https://sourceforge.net/projects/poc...files/pbres/1/

Then put your custom theme into system/config/themes on the USB storage. It will then appear as a selectable custom theme option in settings menu.

[nhedgehog]

Correct me if I'm wrong but afaik pbres is not working anymore with new themes (since firmware version 5). The only working theme-editor with v5 firmware I'm aware of is:
https://github.com/Lighting/pbtheme
But it only allows to extract&replace the config.cfg in the theme.

Edit:
Must correct myself. This seems to be working with modern themes (at least the unpack part, regarding the packing part: I still have some problems to figure this out):
https://github.com/Enyby/pbres

[ezdiy]

Originally Posted by nhedgehog

Correct me if I'm wrong but afaik pbres is not working anymore with new themes (since firmware version 5). The only working theme-editor with v5 firmware I'm aware of is:
https://github.com/Lighting/pbtheme
But it only allows to extract&replace the config.cfg in the theme.

Edit:
Must correct myself. This seems to be working with modern themes (at least the unpack part, regarding the packing part: I still have some problems to figure this out):
https://github.com/Enyby/pbres

You're very correct. I just noticed it in the sdk files, but never really used it.

[ondrian]

Originally Posted by ezdiy

There are multiple issues with old sunxi-tools tutorials because the eGON format (version 4.0) has changed. The sunxi-package stuff is parsed by allwinner's modified uboot in lieu of its own classic dtb.

That makes going through that route a bit awkward. I've managed to fire this "native" uboot up by just burning it to memory via fel write/exec (turns out you don't need egon SPL on newer allwinners, as by the time you get to fel, DRAM is already configured, no more 32k sram limit).

Most crucially, it's possible to fire swupdate binary this way (and debrick your device if you seriously hose mmc0).

Hi,
a botched update bricked my device - update errors with 'md5 sum mismatch'. Trying to fix it, I came across this thread.

My idea is to boot via usb to access the internal memory and delete the broken SWUPDATE.BIN file.

I managed to get to the FEL mode:

$ sunxi-fel ver                                                                                                                                                                      
AWUSBFEX soc=00001699(B288) 00000001 ver=0001 44 08 scratchpad=00007e00 00000000 00000000

and I complied u-boot binary accoring to https://linux-sunxi.org/FEL/USBBoot#...-Boot_over_USB

$ make CROSS_COMPILE=arm-linux-gnueabihf- Cubietruck_defconfig
$ make CROSS_COMPILE=arm-linux-gnueabihf- -j$(nproc)

However, when I try to boot over usb, I get errors

$ sunxi-fel uboot u-boot-sunxi-with-spl.bin
usb_bulk_send() ERROR -1: Input/Output Error

or

$ sunxi-fel uboot u-boot.bin
SPL: eGON header is not found

Thanks a lot for any help