OsmocomBB on Openmoko GTA02

Hi guys, I have a lot of problems using osmocom-bb with an Openmoko GTA02. First of all, I followed all the instructions from here [1] and uploaded layer1.highram.bin via external jack serial port (second tutorial). Well, after the firmware is downloaded on the phone osmocon prints: " Finished, sent 54 blocks in total Received branch ack, your code is running now! " and nothing is printed anymore. Moreover, I see no activity on the serial port, all LEDs on my USB adapter being off. When I try to run cell_log from my PC, it prints the following error message and blocks / does nothing: " Failed to connect to '/tmp/osmocom_sap'. Failed during sap_open(), no SIM reader <000e> cell_log.c:804 Scanner initialized Mobile initialized, please start phone now! " I've read about this error and figured out that it is not fatal, but still cell_log doesn't work, nor does the 'mobile' application. I tried the code from master and from sylvain/testing branch and I uncommented "CONFIG_TX_ENABLE". I even tried hello_world.highram.bin and that doesn't print anything after loading it. I don't know what to do anymore. [1] http://bb.osmocom.org/trac/wiki/OpenMoko#no1