FT24 User Manual V1.1
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If your FT24 transmitter and FR receiver are bond and you can check receiver firmware
when only the transmitter is connected to your computer, then FR receiver firmware can be
upgraded right after upgrading FT24 Transmitter while the transmitter is still connected.
9.2 OTA Firmware Upgrading
9.2.1 Receiver and transmitter bound.
1. Connect FT24 transmitter to your computer.
2. Run “SIYI Assistant v1.2.7” to check the transmitter’s current firmware version.