The instructions are just to run the exe to update the bios, an official bios update allowing you to change your model name and number seems really odd, but since there is no guide for me to follow I will leave it be as I dont know how much longer I will use this laptop for anyway as it turned out to be a poor purchase, I think lenova is poor quality and wont buy a brand that whitelists again.
Mine is an ideapad 305, which according to ebay sellers is whitelist locked.
The problem as well I am already on the latest bios, so it wont even let me run the bios file.
Install the package in Windows
Locate the file a8cn54ww.exe that has been downloaded.
Double click the a8cn54ww.exe icon.
Click install.
Click flash bios.
Press Enter to start flashing. During the process, you are advised not to turn off the computer.
When the update finishes, the computer will automatically reboot for the changes to take effect.
If the hot key not work without Fn key after flash BIOS, this SOP describes how to enable hot key mode
Step 1: Press power button to boot, then press F2 key enter BIOS setup.
Step 2: Select sub menu to Configuration.
Step 3: Select to Hotkey Mode item and then press enter.
Step 4: Select Enabled then press enter.
Step 5: Press F10 save and exit, then select Yes then press enter.