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‎12-13-2024 10:30 AM

HP Recommended

I upgraded firmware of my HP Laserjet color MFP m775 to version 4 and I am now getting error 49.38.03. After switching on for the first time, it runs and goes into ready mode for a very short time and then shows the error and immediately reboots on its own. After rebooting, the error message will stay until I press restart or shut down the printer. I have cleared all print jobs, removed all cables except the power cable, restarted 30 mins after unplugging the printer. I cannot even downgrade. I don’t know what to do. I have a report that I need printed like yesterday. Please help.

Category:
4 REPLIES 4

‎12-14-2024 02:46 AM

HP Recommended

Try going back to 3.9.12,  

all software is below, click "Open all"

https://support.hp.com/us-en/drivers/hp-color-laserjet-managed-mfp-m775-series/7829572

 

or just download here

https://ftp.hp.com/pub/softlib/software13/printers/CLJM775/cljM775_fs3.9.12_fw_2309088_001496.zip

 

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I am a community volunteer and do not work for HP. If you find
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‎12-15-2024 01:44 AM

HP Recommended

After powering the printer, the error 49.38.03 appears and then the printer automatically reboots. After rebooting, the printer goes into ready the mode for a short while. During this period when I try to update the firmware in under Support Tools/Maintenance/USB Firmware Upgrade, the printer detects the flush disk and then immediately shows the error, so I cannot downgrade the firmware..

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‎12-15-2024 01:46 AM

HP Recommended

After powering the printer, the error 49.38.03 appears and then the printer automatically reboots. After rebooting, the printer goes into the ready mode for a short while. During this period, when I try to update the firmware in under Support Tools/Maintenance/USB Firmware Upgrade, the printer detects the flush disk and then immediately shows the error, so I cannot downgrade the firmware..

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‎12-15-2024 07:03 AM

HP Recommended

I do not know if this will work or not but after downloading that file, unzip it and copy the two files to a thumbdrive.

put the the thumbdrive in the printer

 

I found the following by using google.   Supposedly you can update the firmware from USB

 

How to use USB to update printer firmware

Flirmware update video possibly useful (big guess)

Thank you for using HP products and posting to the community.
I am a community volunteer and do not work for HP. If you find
this post useful click the Yes button. If I helped solve your
problem please mark this as a solution so others can find it
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