Hi Tom, The device we’re using is B200 and the UHD (tried both libuhd003 and libuhd-dev) version is 3.9.2-1. I tried to install this version osmo-trx=0~20150325gitf147b17+dfsg-3 and no error were received upon running. Unfortunately, all of my phones were not able to camp. I’m not sure if this is a configuration issue but same configuration files were used (which we only changed the IP Addresses and ipa-unit ID for both osmo-nitb and osmo-bts-trx) to the working and existing test servers. Attached are the configuration files for osmo-nitb and osmo-bts-trx. Best Regard, Ron Menez ron.menez@entropysolution.com<mailto:ron.menez@entropysolution.com> On Jun 23, 2017, at 2:02 AM, Tom Tsou <tom@tsou.cc<mailto:tom@tsou.cc>> wrote: Hi Ron, On Thu, Jun 22, 2017 at 4:07 AM, Ron <ron.menez@entropysolution.com<mailto:ron.menez@entropysolution.com>> wrote: Kindly see below error for your reference: # osmo-trx osmo-trx: symbol lookup error: osmo-trx: undefined symbol: _ZN3uhd4usrp10multi_usrp9ALL_GAINSE Can you specify the device and the installed UHD version? There have been a handful of commits recently, though very few of them have been functional changes as opposed to code cleanup and removal. -TT