I had an error code 5 and a fairly non-responsive printer, due to a corrupt SD card. I replaced the card with one from a similar printer, and it seemed okay, as a temporary solution. I then got a whole board as a working pull from another 7970, so I imaged the SD card with the most recent image and started up the printer. I then received a SIM error, so I switched the SIM from the replacement board with my original SIM. It then booted, and I upgrade the firmware from 72.200 to 75.200 via the web page/IP address connection.
After that, the printer rebooted, then gave me a message about encrypting the hard drive, and then rebooted again. I then tried to connect via IP address/web page to put my cloning file on it (I had made a clone image before swapping parts), and to do so, I needed to log in as admin. The credentials no longer work, and the error is: Invalid data entered. Please try again. So I tried from the front panel on the printer itself, and the credentials don't work there, either.
I am stumped. Happy to provide serial number and page count, if that helps anything? Or can I get files and instructions to altboot somewhere and try that? This printer is in my house, and there's not a chance that anyone changed the password between when I upgraded the software and tried to log in again, nor at any other time.
Thanks for any help!
Solved! Go to Solution.
Try the machine serial number as admin password. After that you can change it to 1111 or what ever you want.