![Lenovo ThinkPad T480 - Me FW Downgrade - Request MeSpiLock Failed · Issue #199 · fwupd/firmware-lenovo · GitHub Lenovo ThinkPad T480 - Me FW Downgrade - Request MeSpiLock Failed · Issue #199 · fwupd/firmware-lenovo · GitHub](https://user-images.githubusercontent.com/1674392/163561505-19f66437-1ee7-4347-8e8f-803be8291ee4.jpg)
Lenovo ThinkPad T480 - Me FW Downgrade - Request MeSpiLock Failed · Issue #199 · fwupd/firmware-lenovo · GitHub
![HOWTO] Downgrade/update Lenovo Z40-75 Z50-75 notebook UEFI BIOS from DOS - Balazs Vinarz | bvinarz.org HOWTO] Downgrade/update Lenovo Z40-75 Z50-75 notebook UEFI BIOS from DOS - Balazs Vinarz | bvinarz.org](https://img.youtube.com/vi/G8LHTl9oV3s/maxresdefault.jpg)
HOWTO] Downgrade/update Lenovo Z40-75 Z50-75 notebook UEFI BIOS from DOS - Balazs Vinarz | bvinarz.org
![BIOS rollback flash failure (Secure Flash Authentication Failed) when “Secure Rollback Prevention” enabled - ThinkPad T450, T450s - Lenovo Support SI BIOS rollback flash failure (Secure Flash Authentication Failed) when “Secure Rollback Prevention” enabled - ThinkPad T450, T450s - Lenovo Support SI](https://download.lenovo.com/km/media/images/HT117858/BIOST450_20221212144133608.png)
BIOS rollback flash failure (Secure Flash Authentication Failed) when “Secure Rollback Prevention” enabled - ThinkPad T450, T450s - Lenovo Support SI
![How-can-I-downgrade-my-BIOS-to-KWCN34WW-for-Legion-Pro-7i-Gen-8-RTX-4080-BSOD - English Community - LENOVO COMMUNITY How-can-I-downgrade-my-BIOS-to-KWCN34WW-for-Legion-Pro-7i-Gen-8-RTX-4080-BSOD - English Community - LENOVO COMMUNITY](https://forums.lenovo.com/uploads/topic/202306/h65cuiWKiU8Mbz5aGqKKAw.jpeg?aid=AnBMODi3YO0)
How-can-I-downgrade-my-BIOS-to-KWCN34WW-for-Legion-Pro-7i-Gen-8-RTX-4080-BSOD - English Community - LENOVO COMMUNITY
![Lenovo ThinkPad T480 - Me FW Downgrade - Request MeSpiLock Failed · Issue #199 · fwupd/firmware-lenovo · GitHub Lenovo ThinkPad T480 - Me FW Downgrade - Request MeSpiLock Failed · Issue #199 · fwupd/firmware-lenovo · GitHub](https://user-images.githubusercontent.com/701091/162634049-15cfd932-b645-497d-99ff-579622172e93.jpg)
Lenovo ThinkPad T480 - Me FW Downgrade - Request MeSpiLock Failed · Issue #199 · fwupd/firmware-lenovo · GitHub
![Important. Lenovo Finally did it. Bios/EC downgrade is almost impossible now due last CVE-2017-5715 fixes. : r/thinkpad Important. Lenovo Finally did it. Bios/EC downgrade is almost impossible now due last CVE-2017-5715 fixes. : r/thinkpad](https://external-preview.redd.it/AwIG9ReJq-96Z6VfgVMMM0anVxjQem-xNiVMO-bzkWA.jpg?auto=webp&s=ef4c15b33ffae338670da757d1ba13b735a14d6c)