Access gui with custom preloader or rewrite preloader via commandline

[falk0069]

Is there a way to start the the mtk_gui with a custom preloader? Or is there a way to writing a new preloader with the commandline mtk?

I tried writing a new preloader via the gui but it locked up. Now the GUI gets stuck at:

Preloader - SOC_ID:                     0000000000000000000000000000000000000000000000000000000000000000
Preloader - Jumping to 0x200000
Preloader - Jumping to 0x200000: ok.
None

I can still run the commandline version if I pass in my backed up preloader. example
python mtk printgpt --preloader dump\boot1.bin

But I can't find a way to re-write the preloader via the commandline.

Any help would be appreciated.

[falk0069]

I made a little progress but I obviously don't know what I'm doing. I tried updating the mtk_da_handler.py file and added:
preloader = "dump\\boot1.bin"
right before
if preloader is not None and mtk.config.preloader is None:

I can now open the GUI again, but I still can't re-write the preloader. The debug log says:
[14:39:14]: Error on sending parameter: Write data not allowed (0xc002000c)

There has to be an easy way to re-write the preloader...I hope.

[falk0069]

figured out how to do it. Basically needed to pass in "--parttype=boot1" e.g.
python mtk w preloader boot1.bin --parttype=boot1 --debugmode --preloader=boot1.bin

back in business...thanks for the awesome program.