![]() Probably the most generic way to go back to the stock firmware.First things first, check your firmware version.Printer Pro 7730 downgrade to 1851A vers. This isn’t a problem if you only use OEM Genuine/Original HP ink cartridges. By default, HP SUM will update all components and not permit a downgrade of firmware. 4InkJets - In addition to an excellent firmware downgrade page, 4InkJets gets top rating by Top Ten Reviews in "Best discount ink cartridges 2021. ![]() 8710 firmware downgrade The larger supplier, LD, sent me an email stating that HP firmware upgrades had caused the rejection and that LD is in the process of re-engineering around the change. ![]()
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