And i have no clue on why i could do that.
One day i had to boot it Tehteret again after power loss. Opened up seasonpass and i could not press the boot button. it said that i had a 5.2 version, but i know for sure that i was 5.3 Then i just tried to jailbreak it with 5.2 but got an 1602 error, connected it to my tv anyway and boom there it was 5.2 ver and untehtered.
But again i have absolutely no clue why it worked.
This is just for info if it could help anybody.