4G_2G DTU Products Function
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2.4.2.7. AT+VER
◼ Function: Query software version.
◼ Format:
AT+VER<CR>
+ok=<ver><CR><LF><CR><LF>
◼ Parameter:
◆ ver: The product software version number: three bytes, the big version number, the small
version number, the test version number.
2.4.2.8. AT+GVER
◼ Function: Query GPRS software version(Only 4G product support)
◼ Format:
AT+VER<CR>
+ok=<ver><CR><LF><CR><LF>
◼ Parameter:
◆ ver: The GPRS software version number, it will return +ERR=-2 before the GPRS
initialization finished.
2.4.2.9. AT+APPVER
◼ Function: Query custom software version number
◼ Format:
AT+APPVER<CR>
+ok=<ver><CR><LF><CR><LF>
◼ Parameter:
◆ ver: Products’ custom software version number.
2.4.2.10. AT+RELD
◼ Function: Restore user default parameters, automatically restart
◼ Format:
AT+RELD<CR>
+ok<CR><LF><CR><LF>
2.4.2.11. AT+CFGTF
◼ Function: Save the Current Parameter as the User Default Parameter.
AT+CFGTF<CR>
+ok<CR><LF><CR><LF>
2.4.2.12. AT+FCLR
◼ Function: Restore factory parameters, automatically restart
◼ Format:
AT+FCLR<CR>
+ok=rebooting...<CR><LF><CR><LF>
2.4.2.13. AT+SRST
◼ Function: Software restart.
◼ Format:
AT+Z<CR>
+ok<CR><LF><CR><LF>
The IO control state can be maintained. For general applications, use a hard restart..