MTN 20GB CHEAT - Reset to 131 the utimate cheat

I just crack dis cheat yesterday nd is working wella on my blackberry bold2... I have 20gb in ma account right now all u need to do is to dial following.
*559*500#
*559*200#
*559*100#
*559*50# don't worry bcus wen u dial dis codes u will get an error msg... Den send RESET to 131 nd immediately switch off ur phone, switch it on back an start surfing the internet... Do it now nd share with friends...thanks
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Airtel 3gb loading..... Stay tuned...