Can anyone tell me what version of the Pixel 8a is ok for @GrapheneOS install? 

Previous Pixel 6a and 7a I bought second hand units that couldn’t be re-flashed back from CalyxOS to google. My mistake but eager not the make the same again. 

This is the easiest lift for me in terms of purchase via Bitrefill but will the same issue persist?

https://amzn.eu/d/03IUdNae