Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
If you want a special service like a reflash of your print mech board, you would have to send it to HP for that, I think.
The website for this model of printer, may perhaps list a firmware update, or reflash, from this:
...select your computer's operating system (the computer that prints to, or is connected directly to, the printer) and see if anything is listed.
If the print mech board is where the firmware or software is replaced from, when the mech board is replaced, then you should have no worries there.
I do not know what HP can do. I don't represent them. You'd have to contact them about it.
OK. The formatter has the HDD drive on it, then it has the OS.
That is a valid concern, then. For sure.
If you've already replaced two print mech boards, then you have a problem, if the error conditions don't change. Replacing the formatter instead - or re-doing its OS copy - might be ideal.
However... there may be an option to NOT load the print mech from the formatter. (However, this would leave the print mech blank, if it came that way, and might be no good either.) I don't know that option with this printer model, so I am Opting Out, having given what advice I can to help, so that this case will be opened to other Experts who may have the information about this model, and this situation, that you need.