How to reset a device that was activated with an old Apple ID
I have an iPod Touch 6th generation that I originally gave my mom. She gave it back to me recently because she never used it. I was able to reset it to factory and update software to 12.5.5, but I can't activate it. It was activated with an old Apple ID of mine (Gmail email address) that I don't use any longer and is no longer a valid Apple ID because I changed it to an iCloud.com email address.