micromax x228
http://www.4shared.com/file/JNqiZJtU/MS_X228.html?
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maxx 188
http://www.4shared.com/file/bdOKPK67/maxx_188.html?
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zen m72
http://www.4shared.com/file/sn3dmAIu/ms_zen_m72.html
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You can also see it by typing *#06# on your phone.Each time you switch your phone on or attempt to make a call the network systems check the IMEI number of the handset you are using.
the device you want to unlock is active on another customer's account