If OTA is unavailable, you must manually flash the firmware. This is the standard procedure for technicians.
Rooting modifies the boot.img and system partitions. Because the T320 uses a proprietary RIL (Radio Interface Layer) for PTT prioritization, a rooted device often suffers from: inrico t320 firmware
: Newer firmware versions often provide better support for TeamSpeak 3 and the latest versions of Zello. If OTA is unavailable, you must manually flash the firmware
Use this method if you need to install a "clean" or "unlocked" Android firmware version, often purchased from retailers like Inrico.shop If OTA is unavailable
Updating the firmware is a delicate process. Follow these steps carefully: