@JJONES82
I don't think a print head or firmware is going to fix the issue - the printer - region USA - uses HP 952 ink.
Nothing I can find disputes that requirement.
HP Store > Shop > Ink or Toner
That said, this printer uses 954 ink in Latin America.
Printer Specifications for HP OfficeJet Pro 7740 Wide Format All-in-One Printer (G5J38A)
Replacement cartridges | United States and Canada: HP 952 Black OfficeJet Ink Cartridge; HP 952 CMY OfficeJet Ink Cartridge; HP 952XL Black OfficeJet Ink Cartridge; HP 952XL CMY OfficeJet Ink Cartridge; HP 956XL Black Europe, Middle East, and Africa: HP 953 Black, HP 953XL Black, HP 953 Cyan, HP 953XL Cyan, HP 953 Magenta, HP 953XL Magenta, HP 953 Yellow, HP 953XL Yellow; HP 957XL Black Latin America: HP 954 Black, HP 954XL Black, HP 954 Cyan, HP 954XL Cyan, HP 954 Magenta, HP 954XL Magenta, HP 954 Yellow, HP 954XL Yellow; HP 958XL Black Asia Pacific and Japan: HP 955 Black, HP 955XL Black, HP 955 Cyan, HP 955XL Cyan, HP 955 Magenta, HP 955XL Magenta, HP 955 Yellow, HP 955XL Yellow; HP 959XL Black |
If you purchased the printers in the USA, from a US merchant, they should both be region-set for the USA.
Printer Home Page - References and Resources – Learn about your Printer - Solve Problems
“Things that are your printer”
NOTE: Content depends on device type and Operating System
Categories: Alerts, Access to the Print and Scan Doctor (Windows), Warranty Check, HP Drivers / Software / Firmware Updates, How-to Videos, Bulletins/Notices, Lots of How-to Documents, Troubleshooting, User Guides / Manuals, Product Information (Specifications), more
When the website support page opens, Select (as available) a Category > Topic > Subtopic
HP OfficeJet Pro 7740 Wide Format All-in-One Printer series
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