EEA vendor image bootloop (missing files in device/unihertz/jmax_A14_241029_eea/prebuilt/ ?) #2
Description
Working with the EEA version of the Jelly Max and the PitchBlack variant of the recovery, I received the following error after following all the steps in order when executing mka vendorbootimage:
mkbootimg: error: argument --dtb: can't open 'device/unihertz/jmax_A14_241029_eea/prebuilt/dtb.img': [Errno 2] No such file or directory: 'device/unihertz/jmax_A14_241029_eea/prebuilt/dtb.img'
And indeed there is a dtb.img in the TEE subtree (along with lots of files in device/unihertz/jmax_A14_241029_tee/recovery/root/, but not in the EEA subtree. These files seem to be missing.
I tried the following to solve the issue:
From the official sources (2024102922_g78v78c2k_dfl_eea-001.zip), I took the file 2024102922_g78v78c2k_dfl_eea/dtbo.img and placed a copy in device/unihertz/jmax_A14_241029_eea/prebuilt/.
Now, the build process finishes with #### build completed successfully (15:52 (mm:ss)) ####.
Flashing the resulting vendor_boot.img results in a bootloop, though.
fastboot mode still available, but both recovery and main OS refuse to start.
Good to know: Flashing back the original recovery vendor_boot.img fixes everything.
Still, I would like to put a powerful custom recovery on the phone. Do you have any idea what I am missing?
Could the dtbo.img from the official sources be different from the partition image expected by your build scripts?
Maybe the other files in device/unihertz/jmax_A14_241029_tee/recovery/root/ are required as well? Where would I find them?
Looking forward to receiving any helpfull comments or idea or questions.