Max, I also have a 140 with the same issue, no connection to the SGSN. Below are its specs. Equipment_Version='140_029_24' Software_Version='120a002_v149b44d0' It’s a PCS 1900 unit. Unfortunately I do not have a 139/140 with a working firmware version. Maybe someone else can chime in with a version number that does work with GPRS on the 139/140 models? Regards, Caleb From: openbsc-bounces(a)lists.osmocom.org [mailto:openbsc-bounces@lists.osmocom.org] On Behalf Of Max Marbler Sent: Tuesday, October 04, 2011 0246 To: Gus Bourg Cc: openbsc(a)lists.osmocom.org Subject: Re: GPRS not coming up on NanoBTS 140 Can you post your firmware versions? I've recently been exploring anomalous behavior which seems to follow firmware version differences; these odd behaviors seem to have the greatest affects on the 139/140 type units used in GPRS-enabled configurations. Inclusive of the issues I've seen are a few 140-model units which simply do not respond to any GPRS-related configurations with a connection to the SGSN. My suspicion lies strongly in the firmware either not supporting GPRS or there being a different mechanism to invoke it. While it may be beyond the scope of the list to discuss issues relating to vendor firmware, I am eager to solicit an off-list discussion with anyone with more "experience" with firmware issues. The ideal end result would ideally be two-fold: 1) To discover how firmware version affects interoperability with openbsc 2) Ultimately help more people get their setups working on the variety of hardware floating out and about -MM On Fri, Sep 30, 2011 at 10:56 AM, Gus Bourg <gus(a)bourg.net> wrote: Hello all, Looking for ideas.  I have a NanoBTS Model 140 which doesn't seem to work with GPRS.  It never connects to the SGSN.  The openbsc/sgsn environment is ok - I can swap in another nano and it works fine. I've taken some log captures: