Error cb4

AnnMj — Sun, 21 Sep 2025 12:37:47 GMT

I have been on phone to customer support and I still have the error cb4 can’t use terminal and now have off line payments. Strong Wi-Fi and has worked perfectly for years until today.
really need help.

Re: Error cb4

Breffni — Fri, 01 Sep 2023 07:23:53 GMT

Hi @AnnMj - sorry to hear you're having trouble with your Terminal.

cb4 is usually a network error. Did you manage to manually factory reset the Terminal?

I'd suggest trying to connect to another network after doing so like your mobile hotspot to see if that resolves the error - from there you can switch back to the main WiFi.

To manually factory reset, hold down the power button for 10 seconds until you see a black screen with a countdown timer. Keep holding down the power button on that timer goes to zero and the screen says you can release the power button.

You'll be prompted to enter the network info after.

Let me know how it goes 🙏

thread Error cb4 in Payments Troubleshooting

Error cb4

Re: Error cb4