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本帖最后由 php.c 于 2018-6-26 17:55 编辑
UPDATE LENOVO IDEAPAD 720S-13ARR (RYZEN) BIOS TO 6KCN38WW
Note: This article applies to those whose Lenovo ideapad720s-13arr (r5-2500u and r7-2700U) has 6KCN2*WW (6KCN28WW, 6KCN29WW, 6KCN26WW) version of the BIOS which can not be upgraded to 6KCN3*WW(6KCN37WW,6KCN38WW) BIOS.
If you do not want to toss, you can directly omit 2-4 steps and directly download the extracted firmware of the programmer from the attachments.
1, Backup the SN, MTM,MSDM and other BIOS information throught the script, just unzip the backup_SN_script.zip and run _backup.cmd as Administrator.
2, To avoid EC is stiil the old version after the BIOS is upgraded, I take methods of flash 6KCN37WW with a programmer and then update to 6KCN38WW through the official installation. Download the 6KCN37WW version BIOS installation file from Lenovo's official website and rename it 6kcn37ww-offical.exe.
3, Extract the BIOS file, download the Inno Setup Unpacker from https://sourceforge.net/projects/innounp/files/ ,unzip it and place innounp.exe in the same directory with 6kcn37ww-offical.exe. Open a command prompt, navigate to the current directory and type innounp.exe -x 6kcn37ww-offical.exe. When finished, open the {app} folder that was created in the directory. In the {app} folder, open the 6KCN37WW.exe using Winrar or 7zip to extract the BIOS.fd file.
4, extract the BIOS programmer file, download InsydeImageExtractor from https://github.com/LongSoft/InsydeImageExtractor ,place the extractor.exe and BIOS.fd in the same directory, open a command prompt, navigate to the current directory and type extractor.exe BIOS.fd 6kcn37ww_programmer.bin , you will get a BIOS programmer file named 6kcn37ww_programmer.bin of size 8MB (8,388,608 bytes).
5, Disassemble the notebook, flash the 6kcn37ww_programmer.bin through a flash programmer.I have CH341A and XTW100, they only support 3.3V and 5V.But the BIOS Chip is 1.8V. So I use a 3.3V turn 1.8V adapter.Back up the original programmer's file and flash the new one. After completion, boot your notebook and your bios version will be on 6KCN37WW.
6, Download the 6KCN38WW version of BIOS installation and update. After completion, both the BIOS and EC will be on the latest version.
7, Repair the SN, MTM, Product Name, MSDM. run _restore.cmd as Administrator.
Attachments download link https://pan.baidu.com/s/12iAjCS3SZ2yXWAlBGGV41w password: rs84
MEGA download link https://mega.nz/#F!i7oDkI6I!iw-ZTWJ3f3d6oArav7TB1Q
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