paranoid android on i9300 - help needed

Hi all

I need some help.
i was on stock (rooted) with TWRP recovery and wanted to have paranoid android 5.1.

i downloaded the lasted from the paranoid android site and tried to flash. after flashing it gets stuck in bootloop.
i have tried almost all previous versions of paranoid android 5.1 but all have same results.

then i tried to get an older version of paranoid android 4.41. which went fine. still i'm not able to upgrade it to 5.1 as OTA is giving error and flashing result in same bootloop

please guide me

regards
bilal