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Finally I have not been able to enter the firmware in the printer using the methods that you have explained to me, I don't know if there is any other method...

Thank you

Hi Wav, Thank you very much for your quick response, of course if you help me I will make a contribution to the forum.

How could you send me the firmware and the instructions to run it?

Thank...

Does anyone have an older firmware for the M454 and M479 printers???

I´m desperate with the new update...

Thanks a lot!!!

Hi, do you have the older firmware that you can share? We have a 454 and m479 that is locked out from using non-oem toner.

Thanks!!