Hi,
I have two TV boxes TX6 (4/32) and TX6-H (4/64). I have successfully installed and ran following 2 linux on both tx boxes
1) Armbian_20.05.3_Arm-64_buster_current_5.7.0-rc2_desktop_20200425.img
2) Armbian_20.11_Arm-64_focal_current_5.10.0-rc4_desktop.img
U boot file
1) u-boot-allwinner-h6-tanix-tx6.img
Everything seems working except wifi. I have searched a lot but didn't able to get any solution. Following are the specs of my TV box