Warning: Downgrading printer firmware can brick the device, remove features, or void warranties. Proceed only if you understand the risks.
What you need
Step-by-step downgrade (USB method — safest)
If USB method not available — using Embedded Web Server (EWS) / Network:
Troubleshooting
Alternative options
Legal and warranty notes
If you want, I can:
To downgrade your HP OfficeJet Pro 8620 firmware—often done to resolve "cartridge problem" or "non-HP chip detected" errors—you must first enable the printer to accept older versions and then manually send the firmware file from a computer. 1. Enable Firmware Downgrade on the Printer
Before attempting to install old software, you must unlock the printer's update settings via its control panel:
On the printer display, swipe down and select Setup (gear icon). Go to Printer Maintenance > Update the Printer. Select Printer Update Options and choose Allow Downgrade. Set Allow Updates to Yes.
Set Check for Updates to Do Not Check to prevent the printer from automatically re-updating later. 2. Perform the Downgrade (Windows)
Since HP does not officially host older firmware, you must use a backed-up or third-party version of the .exe or .rfu file (typically version 1910A or earlier).
Connect via USB: Use a USB cable for the most stable connection.
Run the Firmware Package: Double-click the downloaded firmware file on your computer.
Select Your Printer: When the update window opens, select your HP OfficeJet Pro 8620 from the dropdown menu.
Send Firmware: Click Update or Send Firmware. The process usually takes 2–5 minutes.
Restart: The printer will reboot once finished. If prompted about "non-genuine" cartridges, select OK or Continue to bypass the warning. Alternative: Factory Reset
If you cannot find the firmware file, a factory reset may restore the base firmware version, though this is not always successful on newer models. Path: Setup > Tools > Restore Factory Defaults > Yes.
Note: HP officially discourages downgrading as it removes security patches and may void warranties. Some newer firmware versions (like FDP1CN2022AR) are specifically designed to block downgrading.
The HP Officejet Pro 8620 is a powerhouse printer, but many users have found themselves locked out of using affordable third-party ink cartridges due to "Dynamic Security" features included in recent firmware updates. If your printer suddenly rejects non-HP cartridges with a "Supply Problem" or "Cartridge Error," a firmware downgrade is often the only solution.
This guide provides the most current methods to downgrade your HP Officejet Pro 8620 firmware to restore compatibility with third-party ink. Why Downgrade Your HP 8620 Firmware?
HP regularly pushes firmware updates to "improve performance," but these updates often include code designed to recognize and block non-HP chips. By downgrading to an older version (typically versions from 2014 or 2015), you bypass these restrictions.
Cost Savings: Use remanufactured or compatible cartridges at a fraction of the cost. hp officejet pro 8620 firmware downgrade new
Reduced Waste: Keep perfectly good cartridges out of landfills.
Printer Autonomy: Take back control over what supplies you put in your hardware. Prerequisites Before You Begin
Before attempting a downgrade, ensure you have the following ready:
A USB Cable: Do not attempt a firmware downgrade over Wi-Fi; a dropped signal can "brick" (permanently disable) your printer.
The Correct Firmware File: You specifically need the HP Officejet Pro 8620 N911n firmware, usually version FDP1CN1416AR or earlier.
Windows or Mac PC: Most downgrade tools are executable (.exe) or disk image (.dmg) files. Step-by-Step Downgrade Process 1. Disable Automatic Updates
Before downgrading, prevent the printer from immediately re-updating itself. On the printer control panel, swipe down the dashboard. Go to Setup (Gear Icon) > Printer Maintenance. Select Update the Printer > Printer Update Options. Select Do Not Check. 2. Enter "Refurbish" or "MFG" Mode
Some newer firmware versions block standard downgrades. You may need to put the printer into a special state: Turn the printer off.
While holding the Power button, press the Back (curved arrow) button 4 times. The printer should boot into a "Support Menu."
Navigate to Enable/Disable Menu and ensure "Firmware Update" is enabled.
To downgrade your HP OfficeJet Pro 8620 Go to product viewer dialog for this item.
firmware—typically to bypass "Non-HP Chip Detected" errors—you must manually install an older version (like 1640A or 1910A) because HP does not officially support rollbacks. Quick Checklist Before Starting
Disable "Cartridge Protection": Go to Setup > Tools > Restore Factory Defaults to reset protection settings.
Turn off Automatic Updates: Navigate to Settings > Printer Maintenance > Update Printer and set it to Manual.
Stable Connection: Use a USB cable instead of Wi-Fi for the downgrade to prevent bricking. 🛠️ Downgrade Methods Method 1: Windows Downgrade Tool
Source the File: Find an older .exe firmware file from reputable third-party archives or community backups (e.g., CompAndSave or YB Toner).
"Not Applicable" Fix: If the tool says the update is "Not Applicable," right-click the .exe, extract it with 7-Zip, open EnterpriseDU.ini, and change VerifyDownloadID from 1 to 0.
Run & Send: Open the modified tool, select your printer, and click Update. Method 2: USB Drive (Alternative) Format a USB drive to FAT32. Save the older .ful firmware file to the root of the drive. Insert the drive into the printer's front USB port. If the printer asks "Upgrade detected?", select Yes. Method 3: Factory Restore (Limited Success) Go to Setup > Tools > Restore Factory Defaults.
This does not always roll back the firmware version but can clear "Protected Cartridge" blocks that prevent third-party ink from working. ⚠️ Important Risks
Bricking: Interruption during the process can make the printer inoperable. Security: Older firmware lacks the latest security patches.
💡 Pro Tip: After a successful downgrade, go back into settings and triple-check that "Check Automatically" is turned OFF so the printer doesn't re-update itself. If you're stuck, let me know: What firmware version do you currently have? Are you on Windows or Mac? Is the printer connected via USB or network?
downgrade del firmware 8620 pro - HP Support Community - 8876298
No. The unsigned .rfu file requires Windows’ raw USB stack. Macs add extra validation layers that HP exploits to block downgrades. HP OfficeJet Pro 8620 — Firmware Downgrade (New)
I love my OfficeJet Pro 8620: fast color printing, decent scan quality, and a touchscreen that — mostly — behaves. But after a recent firmware update it started acting… different. Slow wake-from-sleep, flaky AirPrint, and a new setting buried in menus that I hadn’t asked for. I tried every standard fix (reset, reinstall drivers, factory restore) before doing something a little risky: I downgraded the printer’s firmware. Here’s the story, why I did it, how I did it, and the trade-offs so you can decide if it’s worth trying.
Why downgrade?
A quick reality check
My setup
Step-by-step: how I downgraded (concrete, prescriptive)
Identify current firmware
Find the target firmware
Backup settings
Prepare a static IP
Put the printer in update-ready state
Upload the older firmware
Verify and restore
Troubles I hit (so you’re prepared)
When you shouldn’t downgrade
Alternatives to downgrading
Final thoughts Downgrading firmware isn’t for everyone — it’s a last-resort tool when a recent update harms your daily experience and other fixes fail. It restored my OfficeJet Pro 8620’s previous snappiness and fixed the AirPrint flakiness, but it also required patience and care. If you go down this path: document every step, keep backups of settings, and be prepared to restore to the latest firmware if you hit unexpected issues.
If you want, I can:
A key "new" feature for the HP Officejet Pro 8620 firmware downgrade is the Automatic Update Lockout
. This feature allows you to permanently disable the "Check for Updates" function after successfully rolling back to an older firmware version (like FDP1CN1416AR
By locking out these updates, you prevent the printer from automatically re-applying "Dynamic Security" patches that block the use of non-HP or refilled ink cartridges. Key Benefits of the Downgrade Feature Cartridge Freedom
: Bypasses "Dynamic Security" to allow third-party, remanufactured, or refilled ink cartridges. Cost Efficiency
: Enables the use of significantly cheaper ink alternatives compared to genuine HP supplies. System Stability
: Resolves "Ink System Failure" errors or other bugs introduced by newer, problematic firmware updates. Control over Updates : Changing the update setting to A Windows PC (recommended) or macOS with USB
ensures you only update when you choose, protecting your preferred printer state. Popular Downgrade Methods Update the firmware on an HP printer | HP® Support
HP OfficeJet Pro 8620 Firmware Downgrade: Guide for 2026 Downgrading the firmware on your HP OfficeJet Pro 8620 is often necessary when a recent update prevents the use of more affordable third-party or compatible ink cartridges. While HP frequently releases updates that include "dynamic security" to block non-HP chips, rolling back to an older version can restore compatibility and save on printing costs. Why Downgrade Your HP 8620 Firmware?
The primary reason for a firmware downgrade is to bypass the "Non-HP Chip Detected" or "Cartridge Problem" errors that appear after an automatic update. These updates often:
Block third-party ink cartridges that were previously working. Force the use of more expensive genuine HP cartridges.
Prevent the printer from accurately displaying ink levels for refilled cartridges. Step-by-Step Downgrade Process
To successfully downgrade, you must first prepare the printer to accept an older version of software. 1. Enable Downgrading on the Printer
Before running any software, you must unlock the printer's ability to accept a rollback: On the printer control panel, go to Setup > Tools. Navigate to Printer Maintenance or Update Printer. Look for Manage Updates. Select Allow Downgrade and set it to Yes.
Also ensure Allow Updates is set to Yes temporarily so the firmware file can be sent. 2. Download and Run the Older Firmware
Since HP no longer hosts older firmware versions on their official support site, you will need to find a reliable third-party source or use a previously saved backup.
Connect your printer via USB cable for the most stable connection during the process.
Open the downloaded firmware package (typically an .exe file for Windows).
Select your HP OfficeJet Pro 8620 from the list of detected printers. Click Update or Send Firmware.
The printer's display will show an update in progress; do not turn off the printer during this time. 3. Disable Automatic Updates Post-Downgrade
To prevent the printer from automatically re-updating to the version that blocks your ink, you must turn off the auto-update feature: HP Printer Firmware Downgrade Guide: Download Link Included CompAndSave
HP® releases a new firmware update to remedy their recent ... - LD Products
If you are looking to downgrade the firmware on your HP OfficeJet Pro 8620, you are likely facing one of two common scenarios: your printer is refusing to work with third-party ink cartridges, or a recent update has caused connectivity or scanning issues.
HP intentionally makes downgrading firmware difficult to prevent security loopholes, but it is not impossible. This guide covers the methods, risks, and step-by-step instructions to revert your printer to an older version.
Method A: Router-Level Block (Recommended)
Method B: Disable via HP Embedded Web Server (EWS)
192.168.1.101).Method C: Physical – Disable WiFi and use USB Only
HP provides an "HP Printer Update Utility" which sometimes allows you to choose specific older firmware versions, though this is becoming rarer.
What you need:
Steps:
Perform a Hard Reset: