I bricked my $3,700 Mac Studio by upgrading to MacOS 26 - here's how I got it back

Warning: If you own a Mac with an M3 Ultra chip, don't be like me. Hold off on upgrading to Tahoe. Here's why.
Business Insider

How to put your iPhone or iPad in DFU mode to fix it as a last resort

DFU mode is a way to recover your iPhone or iPad using a computer. To put an iPhone or iPad into DFU mode, you'll need to use either iTunes or Finder. DFU mode works differently on iPhones and iPads ...
IGN

DFU Mode

Make sure to back-up your iPhone's operating systems and functions before committing to this (identical to a "Restore Point" on Windows), just so have a state you can restore your phone in case ...