Steam Deck LCD - Downgrade BIOS 118 to BIOS 116 and unlock for Smokeless UMAF undervolt / overclock
#steamos #steamdeck #downgrade #overclock #undervolt #bios #steamdecklcd #smokeless #umaf
Several users that have updated to SteamOS 3.6 / MAIN branch now have no access to smokeless to undervolt / overclock. This is because the latest update contains BIOS 118 which prevents the unlock method. Although BIOS 118 now contains a menu for undervolt, some still prefer the granularity of an unlocked BIOS.
To unlock the BIOS, need to downgrade first to BIOS 116. This video will show you how to downgrade to BIOS 116 and afterwards perform the BIOS unlock.
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This is for educational and research purposes only!
Credits goes to Smokeless for the 6-liner SD_Unlocker.c !!!
This is using evlaV jupiter-bios-unlock which is an enhanced / extended version of SD_Unlocker.c. It allows to unlock / relock the BIOS.
Download BIOS 116 from evlaV gitlab repository -
https://gitlab.com/evlaV/jupiter-hw-s...
To downgrade perform the following commands in Konsole terminal -
1. mkdir BIOS
2. cd BIOS
3. sudo /usr/share/jupiter_bios_updater/h2offt jupiter-$(sudo dmidecode -s bios-version)-bios-backup.bin -O
4. ls
5. sudo /usr/share/jupiter_bios_updater/h2offt ~/Downloads/F7A0116_sign.fd -U
6. Steam Deck will reboot to perform the downgrade.
7. cd BIOS
8. sudo dmidecode -s bios-version
9. sudo /usr/share/jupiter_bios_updater/h2offt jupiter-$(sudo dmidecode -s bios-version)-bios-backup.bin -O
10. ls
11. wget https://gitlab.com/evlaV/jupiter-PKGB...
12. chmod +x jupiter-bios-unlock
13. sudo ./jupiter-bios-unlock
14. Shutdown then press VOLUP + POWER to access the BIOS.
15. Verify PBS / CBS is available in the menu.
Congrats the BIOS has been downgraded and unlocked. You can use Smokeless UMAF. Or just use the PBS / CBS menu.
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Dual boot / Clover / Windows / SteamOS / Batocera / Linux. Playing retro and modern video games on my Steam Deck!
Hi - I'm the author of the Clover dual boot script for the Steam Deck -
https://github.com/ryanrudolfoba/Stea...
The channel is focused on stuff I do with my Steam Deck which is mostly playing modern / retro video games, and also covers some mini-guides and scripts that I have written which is available in my Github repo -
https://github.com/ryanrudolfoba
All gameplays on this channel are unique and taken from my Steam Deck hooked up to a capture card.
We don't stop playing because we grow old; we grow old because we stop playing.
Thank you, have fun and keep on gaming!
If you like my work and want to support me, please subscribe to my channel -
https://www.youtube.com/@10MinuteStea...
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