Hi everyone, I'm having a frustrating issue with an HP DeskJet Ink Advantage 2975 (2900 series), and I'm hoping someone here might know how to fix it.
The printer was working fine, but I decided to try HP's official firmware updater (version 6.29.7.0). Unfortunately, the update failed, and now the printer is permanently stuck displaying E9.
I've tried restarting it, attempting a factory reset using the button combinations I could find, and running the official HP firmware updater again over USB. Nothing has worked so far. The updater either freezes during the process or displays an "internal error" saying that the printer cannot complete the request.
What's interesting is that Windows still recognizes the printer over USB, but not as a normal printer anymore. It appears as hp_fwupdate, with USB ID 03F0:FF53.
I've done some additional troubleshooting, and Windows detects four USB interfaces, including two WinUSB interfaces. USBView can read the device's descriptors successfully, so the printer is still responding to basic USB requests.
I also examined the official HP firmware updater and found references to recovery mode and firmware update functions, which suggests that the software is designed to handle printers in this state. However, the recovery process doesn't seem to work with mine.
At this point, I'm not sure whether the firmware is corrupted, the printer is stuck in recovery mode, or the HP updater is failing for another reason.
Has anyone experienced something similar with an HP DeskJet 2900-series printer? Is there a way to recover it from E9 without specialized equipment?
I'd really appreciate any advice. I can provide USB diagnostics, logs, or additional information if needed.
Thanks in advance.