Hello.
Avoid “shady” online sellers, do not buy anything from China.
Also, it’s desirable to avoid MY20 hardware so that you can reformat it should you need/desire to do so. So look for a J or K series APIM, which generally speaking are not MY20… L “and up” are MY20… You can also check our DB for reference → SYNC 3 APIM Hardware Database - CyanLabs
Try asking for a picture of the sticker… Take into consideration that the DB is user driven, so there’s always a chance that a MY20 model has not yet been identified as such…
All known methods for troubleshooting that condition are documented here → APIM Sync Settings Not Saving, VER_ERR08 Errors, Cannot Perform Master Reset or Upgrades/Updates (Solved)
If none of those work, we do not have anything else to recommend.
The only thing that does not rely on the USB is the SR → SR → MR sequence…
You only need to free up some storage for the rwdata clenar to run…
Also, try removing your phone (which I believe it’s an iPhone) from Sync3…