No IMEI null 01 00 fix on galaxy s4 s3 any android phone modem not registered on network fix

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Hi guys and girls!) recently i had my phone broken because i erased the refs folder and system.I had no idea what to do but today i finally fixed it and want to share it with you ) hope this will help you
if you are looking for exact modem version type it in google like this: e.g. : I9500_XXUHOA7_MODEM – this is my modem that worked for me
here is the link for other possible modems(GALAXY S4 I9500) : http://forum.xda-developers.com/showthread.php?t=2192025

Source: Youtube