[Q] [Help] Can someone make a tutorial on OTA-Updater App??? Need it Urgent! topic

Hello, i saw an App OTA Updater which can update your rom. I think everyone knows this. I set it up to my rom according to the method given in the website by the developer of it! But when i tested it i always get md5 error! I Searched for many days for solution but no luck! I think there should be any great member which could help members like me :P :) I will really be THANKFUL of Him :)
Video Tutorial should be Appreciated but any tutorial/guide will work :)
Reply ASAP :)