This script uploads the "timebomb-less" or older firmware directly, bypassing HP's standard update procedures. However, it is a command-line tool with no graphical interface and is not for the faint of heart.
If you see (March 9, 2023) or higher, you are locked out. You need version 20220822 (1742A) or older.
DiscontinuedThis printer has been discontinued. Please shop for associated supplies.
Downgrading your firmware to an older version (such as or 1910A ) is the most effective way to restore compatibility with aftermarket ink. Below is the comprehensive guide to performing a "hot" downgrade and locking your printer against future forced updates. Prerequisites Before You Begin hp officejet pro 8620 firmware downgrade hot
The window for the is closing. HP is scrubbing the internet of older .bdl files. If you have this printer and you value your wallet, follow the USB Recovery Mode guide today. The "hot" supply of working downgrade files is drying up.
In this article, we will explain why HP forced this update, which firmware versions are dangerous, where to find the downgrade file, and how to execute the step-by-step.
Most 8620s have this disabled after 2018 firmware. This script uploads the "timebomb-less" or older firmware
Since HP aggressively blocks downgrades after 2018, consider these instead:
The search phrase " hp officejet pro 8620 Go to product viewer dialog for this item.
HP removed old firmware from their site. Try: You need version 20220822 (1742A) or older
Once the downgrade is complete, you must block future updates to prevent the printer from automatically re-installing the version that blocks third-party ink:
Downgrading your firmware to an older version can bypass these restrictions and let you use more affordable compatible ink again. Why Downgrade Your HP 8620 Firmware?