As of 2021, there are no "official" stable builds for modern Android versions (like Android 10 or 11) specifically for the K004 Go to product viewer dialog for this item. . Most development peaked years ago with unofficial ports:
Asus Fonepad K004 (ME371MG) there are no modern custom ROMs (like Android 11 or 12) released in 2021 due to its aging Intel Atom Z2420 asus fonepad k004 custom rom 2021
If you still wish to attempt a modification, the standard procedure for older ASUS tablets typically involves: ASUS Fonepad - Support As of 2021, there are no "official" stable