If your ZLT X28 is stuck on a boot loop or will not boot normally, use the to force a firmware update.

The simplest way to is through its built-in web dashboard. Most users will succeed with this method.

If you encounter any issues during the update process:

| Issue | Solution | |--------|----------| | Can’t log in after update | Factory reset: Hold Reset button for 10 seconds with power on. | | Update stuck at 0% | Try a different browser (Chrome/Firefox) or disable firewall temporarily. | | No internet after update | Re-enter your APN (Access Point Name) in → 5G/LTE Settings . | | No “Check for Updates” button | Your firmware version may be carrier-locked – contact your ISP. |

Follow these steps to manually update your ZLT X28 firmware: Connect your PC to one of the LAN ports on the ZLT X28.

Use this if online update fails, or if you downloaded a firmware file from your ISP or TOZED support.