This is the #1 reason for failed upgrades. Check the chip near the antenna wire:
Before touching the box, I had to gather the standard Amlogic flashing tools:
I backed up my favorite apps and settings, knowing that this process would wipe the device completely clean.
Write down: PCB version + Wi-Fi chip + RAM size. Example: H96 Pro Plus V6.0, AP6255, 3/32.
If an official update isn't available, consider custom ROMs based on Android 10 for your device.
Do not use Google search results page 1 (ad-filled malware sites). Instead:
SHA256 checksums: Always verify the download hash against the developer’s posted value.