Download usb firmware huge-ic-ah_xxxxxxxxx_TAIXIN-usb.bin to Flash, Note that the firmware ends in -usb.bin;
https://github.com/Xinyuan-LilyGO/T-Halow/tree/master/firmware
If Flash does not have the firmware, you can download firmware to Flash in either Method 1 or Method 2;
After downloading, place the Flash chip on the T-Halow seat; Note the dot of the flash chip and the arrow on the T-Halow seat son against it;
If there are two T-Halow boards with the same frequency of TX-AH module, one can download the esp32 AP firmware and the other can download the esp32 STA firmware through Type-C download;
Plug the two boards into Type-C and open the serial port; The TX-AH module is successfully initialized;
During the initialization process, esp32 sends several AT instructions to TX-AH: AT+SYSDBG=LMAC,0, AT+BSS_BW=8, AT+MODE=AP/STA; More AT;
Start pairing, send pairing command; Send the AT+PAIR=1 pairing command AT the same time. Wait for 3 to 5s. After the pairing succeeds, send the AT+PAIR=0 command to cancel the pairing.
Print the test sending and receiving data after successful pairing;
