HP ProDesk 400-600 G4 Mini-SFF SecureBoot 2003 compatibility

[GG12SSSS]

Yes, I known some other requests was already open in the past about SecureBoot and firmware update about HP ProDesk G4 models. 

Some posts told G4 was not intended to receive newer BIOS update to be compatible with SecureBoot 2023 because hardware was using Intel Gen 6th/7th CPUs (where it's false), ProDesk G4 are using Intel Gen 8th CPUs instead HP ProBook G4 laptops.

HP also announce they will offer update for hardware built in 2018 and later... but this date changes to 2019... where ProDesk G4 was released during 2018.

Anyway, in all case basically the hardware inside a HP ProDesk G4 is totally compatible with Windows 11 (CPU, TPM, GPU, Audio, etc.)... but just have an issue to still work as expected after october 2026 simply because the BIOS (EFI) will not receive a fix to permit to store the new Microsoft Secure Boot 2023 certificate for security and "expiration date".

The lastest BIOS update available for ProDesk G4 was released in 2025 where it's over 2 years after Secure Boot 2023 was available (and it's not a recent info to know that for EFI managers where this date was already know since the first introduction in 2011).

Many HP ProDesk G4 computers still working fine in indutries (and probably at home). In 2025 (and almost previous BIOS updaes) was released due to security issues (CVE). In this case, is technically a "already known" security issue... then more than 0-day !  I understand HP need to work on many situations about all equipments, but the fatal date is very near.

Please, release a BIOS update for this ProDesk G4 to be SecureBoot2023 compliant !!!