galaxy s3 mini problems

[Edvent Oneil1]

hello , i am having some problems on my galaxy s3 mini(I8190N) .. i have try to root my phone from XDA web .. and, after finish the installition .. the device keep rebooting and always show me the samsung logo .. i visit some web .. to repair this .. and then some told me to factory reset and wipe data from recovery mode .. and i repaired it .. so, the problem here my phone not get rooted , and my have 4.1.1 version but the latest is 4.1.2 .. but i cant upgrade because it is CUSTOM device !! but not get rooted ?? and then ..i intalled the official firmware galaxy s3 mini from sammobile .. i did it .. my phone go to 4.1.2 , and problems come again.. firstly the device memory has more than 4GB .. but .. after i installed this official firmaware it goes only 4GB device memory .. and i installed the firmware correctly .. galaxy s3 mini (I8190N) i hope u all can help