Firmware downgrade for HP

[TheSeriousprint]

First of all, in my opinion it's untrustworthy but of course an inacceptable thing that HP blocks third party cadridges in the name of an security update called "Dynamic Security" (see and search for c05308850). And naughty to to this in a business product. Especially the lie of official hotline "theres no way to downgrade". Even though i like HP printers, this should be reason enough to never buy HP printer again.

This is the solution to firmware downgrade any HP Office Jet or  Pro  and other series.

First, dont waste your time with the firmware update utility. You already know, that if the installed firmware is newer than the one you try to install, the options are greyed out.  It is only possible to update not downgrade with it.

However in the firmware update utility is a .ful file extract the file from the exe use 7zip

FINAL SOLUTION: At last, the simple trick to downgrade was shocking easy.

1 find the ip of printer

2. Press WIN+R -> cmd -> To start a command line (cmd)

3. Switch to the directory where you extract the firmware update file xy.exe and go to the directory where the *.ful file (thats the firmware file) is.

4. Use the following command, to binary-copy the firmware file to your printer (in my case it was a network printer, i dont try usb connection, but i think it would work too)

copy /b weber_vr2_pp1_WMP1CN1848AR_nbx_signed.ful 192.168.1.15

Your printer now making some sounds and updates in the background - dont touch and turn it off now, just wait!

The printer then restarts, shows a green screen, numbered from 1-5, updating and start again.

After update, your before non working catridges will work - what a magic - downgrade works!

In addition, have a look at your printers Web-GUI after upgrade for a function called "Cartridge Protection" at Tools -> Product Information -> Catridge Settings. Turn it to off.

Of course it would be a good idea to turn of automatic update too :-)... look at Tools -> Printer Update -> Firmware Update and turn it to off.