Create an account on the HP Community to personalize your profile and ask a question
06-30-2022 12:30 AM
There's so many users encountered problem when trying to update the firmware pf HP DesignJet T770/T1200.
The printer does not recognize the firmware file "TT6-TTAJ_08_04_00.1_mvl40-x86-opt_B.signed.fmw" with either no respondse or an error msg "file not valid".
In fact, the firmware version TT6-TTAJ_08_04_00.1 is the basic requirement for using the new generation cartridge HP72B series (3WX06A/3WX07A/3WX08A/3WX12A), while the previous series HP72 is no longer found in the market.
This is the previous post of user complain :
Finally, the solution was found in a Japanese Web Site
which stated that the printer firmware must be upgraded to the following firmware versions before putting it into TT6-TTAJ_08_04_00.1.
1. First upgrade the firmware to "TT6-TTAJ_08_02_03.3_mvl40-x86-opt_B", which can be downloaded from
2. Then upgrade a firmware patch "TT6-TTAJ_08_02_03.3.90_mvl40-x86-opt_B.fmw", which can be downloaded from
Since, this file does not have a digital sign, the printer panel will prompt you once, and you have to choose 'yes' to continue.
Having installed the above two firmware files, you may now start to further upgrade the firmware to "TT6-TTAJ_08_04_00.1" using the firmware file recently provided in HP official web site :
08-22-2022 10:53 PM
Can confirm this from upgrading a clients T770 printer today. Problem was locating the TT6-TTAJ_08_02_03.3_mvl40-x86-opt_B.fmw firmware file as the original link on the HP FTP site no longer worked. This has been removed by HP it seems.
I did some searching through the HP FTP site by using a FTP client, and found it as an Apple disk image (DMG). This is kind of like a ZIP for MAC's, and has built in error detection when opening.
You can extract the DMG on a MAC or you can use a program like TransMac, 7-ZIP or DMG extractor on a PC to get the firmware update file therein. This is the main update file and weighs in at a bit over 400MB. The second file is a smaller patch and the download link for that is still valid. I have used this today to update this printer, and then got the TT6-TTAJ_08_04_00.1 full package to install.
I was doing this remotely for this customer. The web based administration gives you no feedback on progress. When you select the firmware update file, you have to wait about 5 minutes for it to upload before you get a page saying that the printer is processing the file. Any navigation away from this update page results in an incomplete upload to the printer and you have to start over. It takes another 5 minutes for the printer to check the firmware update file, it will then sit there doing nothing for a minute or so and then reboot. So just be patient.
Didn't find what you were looking for? Ask the community