If the user does not have a device to upgrade the firmware, you can use the AT+CHE command or the downlink command to set the channel, preferably with the adaptive rate (ADR) disabled. Reset the device after setting the channel.
If the user has no device to upgrade the firmware, you can use the at + Che command or the downlink command to set the channel. It is best to turn off the adaptive rate (ADR). Reset the device after setting the channel.
If the user does not have the equipment to upgrade the firmware, you can use the AT+CHE command or the downlink command to set the channel. It is best to turn off the adaptive rate (ADR). Reset the device after setting the channel.