Hello Sir. I’ve been following the Chuwi Hi9 Plus for a month or so now and I have found some useful files. I found a TWRP that created solely for the tablets with the red button. Also found roms that goes back as early as 1005. Please let me know if you would like the files and i send you a link. Also the TWRP came from the 4pda.ru forum version 3.3.0. Thanks.