FOR UNLOCK PUT MODEM IN BOOT MODE
THEN WRITE B315 SAFE LOADER FILE
THEN WAIT 5 -10 SEC AND SEE IN DEVICE MANAGER COM PORTS
THEN RUN FIRMWARE FILE
AFTER FILE FLASH DONE THEN REMOVE CHARGER FROM ROUTER
THEN PLUG CHARGER IN ROUTER
CONNECT RJ45 LAN CABLE TO PC
THEN INSTALL PUTTY SOFTWARE IN PC
IN PUTTY SELECT TELNET OPTION
TYPE IP 192.168.8.1 THEN RUN
THEN GIVE COMMANDS 1 BY 1
THEN atc ati
then
atc at^nvwrex=8268,0,12,1,0,0,0,2,0,0,0,a,0,0,0
press enter of keyboard
then give command
atc at^reset
press enter of keyboard
now your modem unlock and you can use any sim
HUAWEI B315 ZAIN VIVA STC MTN ALL WORLD ALL VERSIONS UNLOCK FREE.7z