Windows 10 support quietly extended until Oct 2027, as users reject Windows 11
(www.windowslatest.com)
no need to format to install LTSC
you can modify a text file on an ent/iot installer to allow system and data preserving upgrades on pretty much anything, even 'home' or 'home premium' editions. i have one here that went 8 pro to 11iot--runs great, and have tested 7hp to 11iot as well. that was the test done before i did the one that 'mattered'.. still using it the test system, too. haven't bothered to redo it or reload anything else on it yet.