Do not enter your Google account during setup. If you flash GApps, the "Setup Wizard" will crash repeatedly. Just skip Wi-Fi initially.
Breathing New Life into a Legend: The Ultimate Guide to Custom ROMs for the Motorola XOOM MZ604 (Wingray) in 2024/2025
You have KitKat running. Now what?
This guide is your definitive roadmap.
Here are the three viable paths for the MZ604. Do not flash generic "Wingray" ROMs from shady sites; stick to XDA-Developers archives.
You need a Windows/Linux PC and a USB Mini-B cable (not Micro-USB!).
Spending $150 on a new Fire HD 10 is obviously better, but that isn't the point. Flashing a custom ROM on the MZ604 is a therapeutic tech ritual. Once you put Team EOS on this device, the UI becomes buttery smooth. It becomes a fantastic offline media device for a kid's road trip or a dedicated Manga reader.