: Double-click the downloaded firmware .exe on your PC.
: Temporarily set Allow Updates to Yes so the printer will accept the firmware file you are about to send.
If you are currently stuck with an 8620 that refuses third-party ink, here are the realistic paths forward:
: Setup → Printer Maintenance → Printer Status Report → Look for “Firmware Datecode” hp officejet pro 8620 firmware downgrade hot
The demand for firmware downgrades spiked when HP introduced . This feature allows the printer to identify and reject non-HP cartridges. By reverting to an older firmware version (typically 1910A ), users can bypass these restrictions and resume printing with compatible inks. Key Risks and Limitations
For users currently struggling with this issue on an 8620, here is the technical breakdown of the situation:
🔥 : Look for a file named OJPro8620_1834A_Update.exe . Double-check SHA hash before running. : Double-click the downloaded firmware
On your printer screen, check Settings > Support > Printer Information to confirm that the firmware version has changed to the older one. How to Prevent Future "Hot" Updates
In some cases, if the older firmware is present, the official HP Printer Update utility can be used to select an earlier version.
A: No. Based on numerous user reports, HP Support will not provide assistance or guidance for downgrading firmware. In fact, their official statement is that downgrading is not supported and they recommend against it. This feature allows the printer to identify and
The most straightforward method is to attempt a downgrade through the standard HP update utilities. This method is frequently mentioned in online discussions, but success is rare. To attempt it, you would:
On your printer screen, go to Setup > Printer Maintenance > Update the Printer > Printer Update Options > Do Not Check . Phase 2: The "Hot" Downgrade Procedure