Hello everyone,
I have a Clevo NH5xAx laptop (sold as XMG Apex 15), AMD Ryzen 7 3700X, InsydeH2O BIOS. Version: B10707 (NH50Ax_07).
I modified Pstate VID values with H2OUVE and the system went black screen.
The VSS NVRAM stored the invalid voltage setting. Normal CMOS battery / internal battery disconnect cannot clear VSS NVRAM on this Insyde BIOS. I am looking for a full 16MB raw SPI BIOS dump (full bin file, 16777216 bytes) of NH5xAx B10707.
The official Windows/EFI BIOS upgrade package is only capsule update, it cannot be used for CH341A full chip flash recovery.
What I have tried:
1. Disconnect internal battery, CMOS discharge: no effect, VSS NVRAM still holds wrong VID setting.
2. Fn+D BIOS reset hotkey: also cannot erase VSS NVRAM.
3. Official XMG BIOS exe/efi: only incremental capsule, not full SPI dump.
I plan to use CH341A programmer + SOIC8 clip to recover. If I can get the full clean dump, I can write it back to the SPI flash chip.
If anyone owns this same model and BIOS version, please share the full 16MB bin dump.
If B10707 is unavailable, any stock NH5xAx 16MB dump is acceptable for reference.
Thank you very much.
Edit by Fernando: Thead title customized and shortened