GT-i9500 unknown baseband after patch cert

Phone has no signal on some networks
On download mode when i was trying to flash cf auto root it will stuck on this error "getting pit for mapping"
After that i was root the phone by iroot
And After patch cert by z3x tool

Imei null baseband unknown
Performing these steps
Write cert,write imei,
Same issue i am sure that this issue will be solved on flashing
But odin stuck on the error