Do not flash ROMs from random "Mega.nz" links found in Telegram groups stick to 4PDA (use translator) or XDA-Developers . Verify the CRC32 checksum before flashing.
The Allwinner H6 is known to run warm. If you are developing a ROM, thermal management is a critical stability feature. allwinner h6 custom rom hot
18;write_to_target_document1b;_w8LsaaSaHs-owPAPiZ7cqAM_100;57; 0;a6a;0;5e9; 0;28c5;0;3516; Do not flash ROMs from random "Mega