I can provide direct links to files or walk you through the setup steps.

Hold the button and press the Power button until the device boots into the bootloader screen. Connect the Xoom to your computer via USB.

You must install a recovery tool like TWRP or ClockworkMod (CWM) to "flash" (install) the ROM zip files.

To install any custom ROM on the MZ604, you must follow these sequential steps:

This table summarizes the best custom ROMs available for the Xoom MZ604. Keep in mind that newer Android versions offer more features, but they will run slower and have more broken hardware capabilities on this aging device. The "Stability" is an approximate rating based on community feedback.

: One of the most stable "modern" options for the Xoom, offering a cleaner interface and better RAM management. CyanogenMod 10.1 (Android 4.2.1 Jelly Bean)

Boot your Xoom back into Fastboot mode (Power + Volume Down). Flash the recovery image to the tablet by executing: fastboot flash recovery twrp.img Use code with caution.

Features built-in multi-window capabilities, robust performance tweaks, and lightweight system footprints.