OTA Update Yes/No

PI3B. HifiBerry DIGI 2 Pro
Is an OTA update from 3.198 to 3.251 recommended or does it require a re-flash?

i did ota on my pi400 just fine

Be careful. On Tinkerboard 3.251 had bug what prevented mounting EXT4 formatted USB disk.

Thanks, I will give it a go.