HP OfficejetPro 7740 952 cartridges won't work

[JJONES82]

I purchased two HP OfficejetPro 7740 printers for work and now it is almost impossible to find replacement ink for them that actually works. The HP web site says that 952 ink is the appropriate ink for this machine, but it isn't. It does not work in either of the printers I bought. The only ink that works is the 954, which is no longer available. Considering that these printers were purchased brand new only a few months ago, I'm wondering why this issue hasn't been addressed. There seems to be no fix for this and calling HP tech support every time I need to replace a cartridge seems excessively tedious. Is there not a firmware update to fix this or is it possible that HP could provide a replacement print head that would recognize the 952's as being compatible? 

[Dragon-Fur]

@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.

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HP OfficeJet Pro 7740 Wide Format All-in-One Printer series 

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