Micromax USB Modem not work in Windows 8/ 8.1
Method 2 (Updated Article January 2014 for Win 8/8.1 both):
Method 1
1. Install the MMX modem application in compatibility mode as above, then restart your system.
2. Next go to your installation folder as:
x64 bit OS –> C:\Program Files (x86)\MMX353G 3G USB Manager\Driver\Win7_64
x32 bit OS –> C:\Program Files\MMX353G 3G USB Manager\Driver\Win7_32
3. copy the file cmnsusbser.sys and
paste it to C:\Windows\System32\drivers folder do replace if any older
version is already...