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Spreadtrum SC9863A

From postmarketOS Wiki
Note This SoC has support in mainline, but there is no device ported yet. So, the current status is unknown.
Spreadtrum SC9863A
Manufacturer Spreadtrum
Name SC9863A
Codenames sharkl3
Architecture aarch64
CPU 4x 1.6 GHz ARM Cortex-A55
4x 1.2 GHz ARM Cortex-A55
GPU PowerVR GE8322
Year 2018
Process 28nm
Components

Bootloader unlock

First method

This method works on most sc9863a devices.

  • Download required files
  • Open Developer options and toggle Bootloader unlock option on
  • Move to fastboot mode
  • Get identifier token with
    fastboot oem get_identifier_token
  • Run ./signidentifier_unlockbootloader.sh paste_token_hre rsa4096_vbmeta.pem signature.bin
  • Run fastboot flashing unlock signature.bin

Second method

Some manufacturers sign bootloaders with their own keys (e.g. Itel). In this case, bootloader exploit may help with unlocking, see https://github.com/TomKing062/CVE-2022-38694_unlock_bootloader for more information.

See also

PowerVR GE8322 page on Imagination Technologies website