How to Update PAX Terminal Software and Firmware
Your PAX terminal processes payments every single day. But when was the last time you updated it? Most business owners never think about this. They assume the terminal works fine, so why touch it? Here is the problem: outdated software slows down transactions, creates security gaps, and can even cause payment failures at busy hours. An available update may address known security, stability, or compatibility issues. The update process depends on your terminal, payment provider, and the latest payment processing standards.
In this blog, we walk you through exactly how to update software and firmware on your PAX POS system. We cover different models so you can find your device and follow the right steps right away.
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Why Updating Your PAX Terminal Matters
Ignoring a PAX POS system update is a risk most businesses cannot afford. Here is what happens when you skip it.
- Updates patch vulnerabilities that hackers exploit to steal payment data.
- An updated terminal processes transactions faster during busy hours.
- Fewer crashes, fewer errors, and fewer failed payments.
- Staying updated keeps your terminal PCI compliant and audit-ready.
- Updates bring support for newer payment methods like contactless payments and digital wallets.
Software vs. Firmware on PAX Terminal: What You Need to Know
Both terms sound technical. But understanding the difference between PAX terminal software and firmware updates helps you keep your device running at peak performance.
| Feature | Software | Firmware |
|---|---|---|
| What it is | The payment app on your terminal | The core system that runs the hardware |
| What it does | Processes transactions and prints receipts | Controls how the device boots and operates |
| Who manages the update | Your payment provider or terminal administrator | Your payment provider or terminal administrator |
| How often | More frequently (regular app updates) | Less frequently (system-level releases) |
| Example | Payment application | Device firmware |
PAX Terminal Update Checklist: What to Do Before You Begin
One small step before the update saves you a lot of trouble later. Go through this checklist and make sure everything is ready.
- Check your PAX terminal internet connection for updates before anything else. A weak or dropped connection can interrupt the process halfway.
- Make sure the terminal is fully charged or plugged into power. A dead battery mid-update causes problems.
- Close all active transactions. Do not start an update while a payment is in progress.
- Finish any payment in progress. Follow your payment provider's instructions on whether you also need to close the batch before updating.
- Note your current software version. It helps you confirm the update worked after you finish.
How to Update PAX A77 Smart Mobile POS
The PAX A77 is built for businesses that never stop moving. It handles table service, delivery, and curbside orders. Its 4G/LTE and Wi-Fi connectivity keep it running anywhere. The PAX A77 software update is just as simple as using the device itself.
- Connect your A77 to a stable Wi-Fi or 4G network.
- The terminal checks for automatic updates once connected.
- If no update starts, press and hold the Power button.
- Select Restart from the menu.
- The terminal downloads and installs the latest firmware update on reboot.
- Once restarted, tap Menu > System > About to confirm the new version.
Pro Tip: The A77 does not support manual updates. Keep it connected to the internet and let it update on its own.
How to Update PAX A8700 Dual-Facing Countertop
The A8700 Dual-Facing sits at your counter and handles both sides of the transaction. Updating it takes just a few minutes. Just follow these simple steps.
- Make sure the terminal is plugged into power.
- Open the MAXSTORE or PAXSTORE app from the main menu.
- Tap the Menu icon at the top left.
- Select Firmware Update.
- Tap Check Update.
- If an update is available, tap Download and Install.
- Wait for the terminal to restart on its own. Do not unplug it.
- Once it reboots, your update is complete.
Pro Tip: The A8700 runs on a single processor. One update refreshes both the merchant and customer screens at the same time.
How to Update PAX A920 Elegant Smart Mobile
The PAX A920 is one of the most popular mobile terminals. It handles payments on the go without any fuss. Updating the PAX A920 firmware is straightforward. Follow these steps, and you'll be done in minutes.
- Connect your A920 to a stable Wi-Fi network.
- Open PAXSTORE or MAXSTORE from the main menu.
- Tap the Menu icon at the top left.
- Select Firmware Update.
- Tap Check Update.
- If an update shows up, tap Download and Install.
- Let the terminal restart on its own. Do not touch it during this process.
- After reboot, go to Menu > System > About to confirm the update.
Pro Tip: No update showing? Simply restart your A920. It automatically checks and pulls the latest version on reboot.
How to Update PAX A920 Pro Powerful Smart Mobile
The A920 Pro takes everything the A920 offers and pushes it further. Faster processor, better performance, and the same simple update process. Here is how to run the update and keep your terminal at its best.
- Connect your A920 Pro to a stable Wi-Fi network.
- Open PAXSTORE or MAXSTORE from the main menu.
- Tap the Menu icon at the top left.
- Select Firmware Update.
- Tap Check Update.
- If an update is available, tap Download and Install.
- Let the terminal restart completely. Do not unplug it mid-process.
- Go to Settings > About > Software Update to confirm the new version.
Pro Tip: A920 Pro runs faster than the standard A920. Updates install quicker too. If your terminal feels slow, clear the cache first. Go to Settings > Storage > Clear Cache, and then run the update.
How to Update PAX E700 Smart EPOS
The PAX E700 EPOS is not just a payment terminal. It runs your entire point of sale operation. That means updates need a little more care. Take two minutes to prepare before you begin.
- Complete your batch close first. This protects all your transaction records.
- Make sure no active sales are running on the system.
- Open MAXSTORE from the main menu.
- Tap the Menu icon at the top left.
- Select Firmware Update.
- Tap Check Update.
- If an update is ready, tap Download and Install.
- Let the system restart on its own. Do not touch it until it fully reboots.
- Once it is back up, run a quick test transaction to confirm everything works.
Pro Tip: The E700 sends a PAX terminal update notification when new firmware is ready. Do not ignore it. Act on it quickly and schedule the update for your slowest business hour.
How to Fix Common PAX Terminal Software Update Errors
To fix common PAX terminal software update errors, reboot the device, verify a stable internet connection, and ensure uninterrupted power.
- Your terminal is already on the latest version. No action needed.
- Check your internet connection and try again.
- Hold the Power button for 10 seconds to force a restart.
- Keep it plugged in and hold the Power button for 10 seconds to turn it back on.
- Contact your payment processor or Soiree Inc. for direct support.
Conclusion
Keeping your PAX terminal updated is one of the simplest things you can do for your business. It takes minutes but saves you from failed transactions, security risks, and unhappy customers. Pick your model, follow the steps, and stay ahead of any issues before they hit. Ready to upgrade or need expert support? Soiree Inc. is here for you. From mobile terminals to full EPOS systems, we have the right solution for your business.