Might be able to use Windows backup to make a copy of your user profile to an external drive, then obtain a copy of Windows 10 IoT Enterprise LTSC 2021, use massgrave to activate it and then restore your backup. You’ll probably need to reinstall your programs manually though.
edit or just put the relevant registry keys (scroll down to the Windows Update section) in to bypass the Windows 11 checks and it should upgrade just fine.
Might be able to use Windows backup to make a copy of your user profile to an external drive, then obtain a copy of Windows 10 IoT Enterprise LTSC 2021, use massgrave to activate it and then restore your backup. You’ll probably need to reinstall your programs manually though.
edit or just put the relevant registry keys (scroll down to the Windows Update section) in to bypass the Windows 11 checks and it should upgrade just fine.