1.Download Odin HERE
2.Download install KIES AS WELL AS latest USB drivers HERE
3.Download your firmware HERE extract it
4.Make shure The idea the phone is actually 70% charged
5.Turn off your own phone
6.Download mode samsung galaxy
7.Home"+"Power"+"Volume Down" buttons through the same. Release your buttons after an individual acquire the warning screen just like towards screenshot issued below.
8.press "Volume Up" button to evaluate ones action,
Mobile : Galaxy A3 :
Model : All
System Version :Lollipop 5.0.2
Samsung|Galaxy A3| SM-A300FU | Lollipop 5.0.2 | Download
Samsung|Galaxy A3| SM-A300F| Lollipop 5.0|Download
Samsung|Galaxy A3| SM-SM-A300H| Lollipop 5.0|Download