Step 3 get the key
4. Configure the key in the third step.
5. Image signature
python sec tools . py sec image-meta _ build = "/OEM "-chipset = sm 8250-sign
6. Write a script to copy the signature file to the out directory.
7. Update non-hlo
CD $ ROOT/common/build & amp; & amppython update _common_info.py
Python common\build\build.py triggers non-HLOS.bin updates. Some versions
Use update_common_info.py instead of build.py
8. burn in secdata.
9. Brush in the signed image.
10, boot verification
I don't see anything unusual at all. You need to open the kernel serial port log.
The reason why ipa_fws failed to sign successfully and other similar situations are subsystem loading problems.