SM-A500FU strange problem

Hi all. ive got a strange problem.
I have a a500fu that i have writen a new cert too. the phone works fine on all uk networks except BT MOBILE who use the EE network. EE sim works completely fine.

also i can not flash any firmware to the phone. everytime i try odin says there is no pit. phone boots up fine as well.

Platform: Samsung Android
Selected port: COM6
Selected model: SM-A500FU
Mode: Normal
Phone model: SM-A500FU
Firmware compiled date: Jun 05 2015
Firmware compiled time: 04:00:00
Firmware released date: Oct 23 2015
Firmware released time: 22:28:35
Phone IMEI: 359536-01-9154***
SW version: MPSS.DPM.2.0.c5-00075-M8936FAAAANUZM-1.21700.1
Performed by 2.2.1 software version