07-02-2019 10:11 AM - edited 07-02-2019 10:17 AM
I don't have acess of the v1.08 Bios, only the v1.06, but I can try to revert to the v1.06.
Another the update changed was the CPU TDP values.
07-02-2019 12:40 PM
Far I know the CPU only boost till 45W instead of 60W, but most of the time it will keep near that value making the CPU Throtlle.
I'm back to V1.06 and till now it is ok. I had a problem with Killer WIFI (code 10), but a simple bios reset to optimal options fixed it.
07-02-2019 06:38 PM
Per a reddit post by me:
Here's how you can downgrade.
Y740 IRH/IRHg: This doesn't apply to you. Only ICHg variants have 1.09, as far as I can tell. If you have a 1660ti, this is you. Otherwise, confirm in Vantage. If for whatever reason you do have 1.09, going to the Lenovo page for your sku should point you to 1.06.
1. Enter the BIOS, press F2 repeatedly. If you have hotkey mode on, you may need to mash FN+F2
2. Navigate to the page with Bios Backflash. Enable that.
3. save and reset with F10
4. Download and run the file linked above
5. Flash the new bios
IIRC one person after backflashing had issues with wifi not working, giving code 10 in device manager. Going into the bios again and restoring to defaults fixed it for them.