08-20-2019 06:39 AM
yesterday I was updated my BIOS version to 8MCN52WW and Realtek audio driver to version 6.0.8703.1 from lenovo Vantage. after already installed then reboot, after that i shutdown and power on again, the performance of my Yoga 530 is degrade. so slowly than usuall, i tried to reconfigure bios to default setting then save changes, but the performance still slow..
so i need to try revert back BIOS version and Driver version, but in https://pcsupport.lenovo.com only shown the latest driver. is there anyone have the previos version BIOS/Driver for Yoga 530?. i didn't know the actual previous version, but i've been search the previous version is 8mcn46ww.
anyone here have some issue like me after update BIOS to 8MCN52WW.
thank you in advance
08-22-2019 06:09 AM - edited 08-22-2019 07:03 AM
Same problem here too. Moreover, I can't put my device to sleep or hibernate, only shut down! Very frustrating. I will try the zip that you posted to revert.
Edit: I get an error message telling me that "this is not a newer version" What do I do?
Edit 2: I enabled an option in UEFI settings that allows rollback and I installed the previous bios version. BUT my problem with hibernation and sleep is not solved
08-22-2019 07:05 AM - edited 08-22-2019 07:08 AM
In order to downgrade it, you must enter the BIOS (by rapidly press F2 as soon as you power on your laptop) and you have to change "BIOS Back Flash" value to Enabled. Then save change and exit.
Disable also "Automatic critical update" from Lenovo Vantage.
Hope this helps.