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.