SyncUp Tracker firmware

My original SyncUp Tracker has a manufacturer date of July 2022. I attempted to update the device's firmware since November 2023, without success. I ordered a warranty replacement, refurbished SyncUp device. In the meantime, I received an email about the problematic firmware update from TCL, the device manufacturer. TCL informed me that a firmware update fix was in the making and to expect a resolution sometime during the week of January 29, 2024.

I received my refurbished, warranty replacement device on January 24. Before I was ready to activate my warranty replacement, a T-Mobile tech support representative carelessly removed my original device from my account without notice. The action of the T-Mobile representative rendered my original SyncUp device "offline". I called T-Mobile and spoke with another tech support representative to have my original SyncUp device restored. However, once activated, the device was still showing up in the SyncUp app as, offline. I had to power cycle the device to bring it online again. Once the device was online, the firmware updated successfully to the latest version.