Hello, my RM520N-GL has been supplied with R01A01 which I read needs to be upgraded to R01A05 first before upgrading to latest. Please provide the necessary files. I presume QFlash can be used on R01A01?
Firmware: AT+GMR
RM520NGLAAR01A01M4GA
I have sent the latest firmware and qflash to your email,pls check,and I hope you can click the 
for me,thx