SDR (Software Defined Radio) » gr-gsm » OsmocomBB SDR PHY

Hello
i managed to run usrp , sib's were succesfully decoded and usrp send RACH to station , but i never can decode reply due to CCCH received bad frame error
ubuntu 18.04
libosmocomcore 0.11.0

uhd 3.10.3
gnu radio 3.7.11
gr-gsm fixeria/trx branch
osmocom bb fixeria/gprs branch

On most new branches i even cant managed to start tranciever , i always had
LLLLL and usrp_sink error , cmd time error so rach was not sent

Is there are any solution ? maybe i need to checkout to another branches/commits ? i seen in demo you could succesfully camp on cell
Btw as a BS i use openbts 2g cell , phones easily camp on it
Thank you