If you are looking for downgrading or updating your BIOS and but can't, this video will show you how to flash any BIOS version using the cheapest SPI Programmer (CH341A).
I'm here practicing on my old HP laptop, but the steps will be the same for any other brand.
If you have any question leave it in the comments, I don't promise you will get the absolute answer but I will try to do my best.
If you are looking for BIOS Services (BIOS Repair, Remove Password, ME Clean and More..), you can contact me on Telegram:
https://t.me/WrongChip
If you would like to donate, here is my PayPal Link:
https://paypal.me/WrongChip
0:00 Introduction
0:23 The BIOS version before downgrade
0:37 Laptop disassembly
1:34 Reaching the Motherboard
2:03 I found my BIOS chip
3:05 Desoldering the chip from the motherboard
3:33 Soldering the chip to an external board
3:52 Connecting the chip to the Programmer
4:30 Connecting the Programmer to my other laptop and installing the drivers
5:40 Searching by chip number on NeoProgrammer software
6:24 Detecting the chip and read its content
7:17 I got my backup bin file
7:53 Identifying my Board ID (BID)
8:38 Searching for my Device Info (DMI) in my backup
9:39 Downloading the new BIOS from HP Website
10:25 Extracting the downloaded file to get my BIOS from it
11:17 Dealing with the encrypted BIOS
11:50 Comparing between the old BIOS and the new BIOS
12:50 Flashing the new file to my BIOS chip
14:04 Desoldering the chip from the external board and solder it to my motherboard
15:02 Testing the laptop with the new BIOS