QUOTE(blacktubi @ Apr 7 2013, 04:19 PM)
MR3420 V1 is slow on identifying

Only solution is to use OpenWRT. Identified in seconds
QUOTE(chuahcs79 @ Apr 8 2013, 11:20 AM)
with openwrt, the E367 huawei can be identify as fast as 5 second,.

Thanks. My router is v1
I read the first page guide...:
QUOTE
now follow all these step below with LAN CABLE CONNECTION ONLY:
- go to your browser login 192.168.1.1
- sign in
- go to system
- firmware upgrade
- click browse ( find the openwrt firmware u download just now )
- click upload
- wait for uploading firmware finish and it will auto reboot ( make sure dont power off the router when this period because it will brick the router )
- once update % finish, try to close your browser and clear your browser cache
- then login 192.168.1.1 ( you will see LuCI Gui interface )
- click login
- go to System
- go to Administration
- key in your new password ( For web Gui )
- re key in your same password again
- click save and apply
- go to Network
- click Edit on Wan ( 3G wan )
- select UMTS/GPRS/ED-VO protocol
- click switch protocol
- select UMTS/GPRS/ED-VO on protocol again
- Modem device ( zte mf680 = /dev/ttyUSB1 , E372 = /dev/ttyUSB0 <- last is zero )
- service type : select UMTS only or UMTS/GPRS
- Key in your ISP APN , ( Unet, Maxisbb, bbnet, celcom3g, u3g, my3g and so on )
- Go to ADvance setting
- Modem init time out: 5 ( key in )
- Use gateway Metric : 0
- Tick the box of : if uncheck, No default route is configure
- Use custom DNS server : 8.8.8.8 click the icon at the end
- second roll: 8.8.4.4
- LCP echo failed Threshold : 0
- LCP echo interval : 5
- Inactivity timeout: 0
- select Wifi
- click Edit
- select your wifi prefer channel 1~11
- enter your wifi name in ESSID
- go to Wireless security
- encryption : WPA2-PSK
- key : wifi password
- click save and apply
- then click enable to on your wifi ( if u need it )
- now go to System
- Reboot
- click Performs reboot
- plug in your Usb modem after
- wait for reboot finish and enjoy
...regarding the part highlighted in red, I'm a bit blur on that.

Can clarify on the ttyUSB1/USB0 thingy? I don't think I need the google DNS 8.8.8.8 and 8.8.4.4. Can I ignore that part?
Just wanna make myself clear on all parts before changing the firmware. Don't wanna brick my router.