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‎03-11-2026 11:08 AM

HP Recommended

I'm posting here because none of the virtual tools recognize my printer's serial number. I had to check "product I don't own" despite owning it because it won't take my serial number. I would be happy to submit photos of the printer and the back tag indicating this is, in fact, my serial number. 

I have a HP DesignJet T520 from 2012 and it has old firmware. This printer is part of the machines that require a firmware update or they can reject cartridges. (HP DesignJet T120 Printer and T520 Printer Series - Firmware Upgrade Required | HP® Support). 

 

We've followed the steps in the document linked and they aren't showing a firmware update available. However, if we search the printer in HPs driver/firmware section we find that it does have two new firmware updates since our version. (HP DesignJet T520 Printer series Software and Driver Downloads | HP® Support)

I'm wondering how I can update this machine to the latest firmware so that it can potentially fix the cartridge issue we're having. 

1 REPLY 1

‎03-11-2026 11:44 AM

HP Recommended

Older printer model, so you will have to use W10 OS, not sure will it work on W11 if you have it.

https://ftp.hp.com/pub/softlib/software13/COL76080/pl-191733-1/HP_DesignJet_T120_Printer_and_T520_Pr... 

 

Identify the printer model you have, download the correct firmware file and follow the instructions.

 

 




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