STEPS HOW TO SOLVE IM20 PAYMENT GATEWAY ISSUE
Step 1:SETTLEMENT
Enter in Maintenance Mode by Key In Password:777131
Function--->Settlement.
Step 2: UPDATE APP
Enter in Maintenance Mode by Key In Password:777131
Menu--->FTP Download--> 41--> DIR NAME: MBB--> IP:103.215.139.71---> PORT num: 21
Once application downloaded terminal will reboot
Step 3: DOWNLOAD PARAMETER
Enter in Maintenance Mode by Key In Password:777131
Menu--->MMS Download-->Application Name: MBB-->TID: Enter TID of terminal-->E1G4W6: 41--->IP: Already Set--->Port: Already Set-->NII: Already Set--:Partial?: 0
Once application downloaded terminal will reboot
Step 4:DRMS REGISTRATION
Enter in Maintenance Mode by Key In Password:777131
FUNC-->DRMS REGISTRATION
After this step successful restart terminal and try to perform transaction.
please do this step after enter the maintenance mode