[REQUEST] Acer Aspire ES1-512 BIOS Unlock

[Sylveon]

I'm trying to unlock the EFI to my ES1-512-C96S. I tried the BOOTX64.EFI file that was offered on this thread but I only get a black screen when I try to boot it.

I had the exact same issue here, the EFI shell provided there doesn't seem to work on that model. Just like you, I got a black screen when trying to boot it. I've found a working EFI shell with the setup_var command here that served the exact same purpose as the one previously linked.

1. Open the linked file in your favorite archival program and extract the BOOTx64.EFI.
   
2. Take a FAT32 USB key (you can easily format it if needed) and put the file in EFI\BOOT. You will need to create this directory structure first.
   
3. Keep the USB plugged in and boot to your BIOS. This is usually achievable by pressing F1 or F2 at boot. I'm not sure which key this model uses, as I usually just keep pressing both.
   
4. When in your BIOS, go to the MAIN tab and turn on the F12 boot menu.
   
5. Go to the SECURITY tab and press Enter on "Select an UEFI file as trusted for executing". This might not appear if you don't have a supervisor password set! Set one now!
   
6. Use the arrow keys to select the drive the file resides on. This will usually be a USB device.
   
7. Follow EFI>Boot>BOOTX64.EFI using your arrow keys.
   
8. Set the name to whatever you want and select YES.
   
9. Press F10 to save and exit.
   
10. When the computer reboots, keep hitting F12 until you are in your boot menu.
    
11. Use the arrow keys to select the entry that you've just created. It should have the same name.
    
12. You will appear in a console. When there, please execute setup_var 0x258 0x01.
    
13. Upon executing the command, type reboot and hit enter.
    
14. To test if it worked, keep hitting F1/F2 when booting.
    You will know it worked when you see an ADVANCED tab added to your BIOS interface.

Tell me how that works out for you! Ciao!