: Sony uses a "Syscon" chip and "NOR" flash that store the current and previous firmware versions. Software alone cannot bypass these hardware checks.
: Even with expert-level hardware modification, you can typically only revert to the exact previous version ps4 tool downgrade v100 exe download work
Here’s why:
Legitimate software-based downgrading is blocked by the PS4's hardware security (Syscon and NOR chips), which prevents the installation of any firmware version lower than the one currently active. How PS4 Downgrading Actually Works : Sony uses a "Syscon" chip and "NOR"