Once the printer reboots, you must tape over or remove the metal chip on the toner cartridge so the printer stops trying to read it. Official Alternatives HP Laser MFP 137fnw Software and Driver Downloads
Caution: Using third-party firmware can void your warranty and carries the risk of "bricking" the device. driver hp laser mfp 137fnw patched
Connect the printer via USB and drag the specific .hd fix file onto the usbprns2.exe installer. Once the printer reboots, you must tape over
Turn the printer off, then hold the [Stop] button and the [Power] button simultaneously. When the screen says "Press Stop to download mode," release them and press [Stop] again until it says "Wait Image". Turn the printer off, then hold the [Stop]
It tricks the printer into seeing the toner level as permanently at 100%, even if the cartridge chip is missing or expired.