u/Disastrous_Leek7634

2019 intel iMac 21.5” with 1tb internal hard drive
(using a crucial 1tb SSD as my main boot drive)

Upgraded to Tahoe 26.5 from Sequoia 15.7.5

Ethernet and WiFi connections are now nonexistent.

How do I get back down to sequoia??

This is my main home office computer

(I do have an iPad Pro)

But I can’t live without my desktop!!

I do still have the installer assistant and macos sequoia program installed on my usb drive that I used initially to get to sequoia thanks to you wonderful people here at OCLP!

Just tell me where to go from here……

Thanks in advance!