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R M rm.engineer84 at gmail.comHi, I am a bit confused about the kind of cable I need to use. I have read the wiki about the calypso serial cable at http://bb.osmocom.org/trac/wiki/CalypsoSerialCable It says: The Calypso phones typically all have a serial port @ 3.3V levels on the 2.5mm earphone jack. Those cables are sometimes called *T191 unlock cable*. You can either buy ready-made cables, e.g. at: - USB variant - gsmliberty.net<http://www.gsmliberty.net/shop/motorola-t191-dataunlock-cable-p-1252.html> - fonefunshop.co.uk<http://www.fonefunshop.co.uk/datacables/motorola.htm> - gsmserver<http://gsmserver.com/cables/Smart-Clip_Cable_for_Compal_Chi_Mei_based_phones.php> - RS232 variant, you still need a separate standard USB/RS232 cable - handy-style.de <http://www.handy-style.de/index/cat190/2130> - cellcorner.com<http://www.cellcorner.com/xshp/unlock-phone-codes/motorola-t190-t191-t193-unlock-data-cable.html> - USB/RS232 cable - tronisoft.com <http://www.tronisoft.com/cat_usbtoserial.php> (FTDI and Prolific cables) If you click on cellcorner.com, you get a serial version of T191 unlock cable. I have purchased a similar cable not from that link but from a local shop near my home. (I am from India). The reason I have purchased the serial version is that the local shop only has the serial version. You have said in the wiki for the serial version, I still need a separate standard USB/RS232 cable. Why do I need a USB/RS232 cable ? If its a laptop, I can understand that they don't come with a serial port so you need the converter. Many PCs come with a serial port. Can I not connect the serial version of the T191 unlock cable to PC serial port? As far as I understand, the T191 unlock cable is used to convert RS232 signal level to 3.3V required by C128. I have a laptop and not a PC. It doesn't have a serial port. Since I was able to get hold of a serial version of T191 unlock cable as I told you in the begining of the mail, I also purchased a USB to Serial converter. Its a BAFO BF-810. Its based on Prolific chipset. So I connected first the USB/RS232 converter ju(BAFO BF-810) and then the serial version of the T191 unlock cable. Is this the right way ? OR Can I just connect the USB/R232 converter (based on Prolific chipset) and the use a cable which contains DB9 female on one side and 2.5mm jack on the other? I am asking the second question because you have mentioned in the wiki under Hints and Warnings like this: If you don't use a 3.3V (low voltage TTL, LVCMOS) serial port you can fry your phone! (internally, it connects to the IO-pins of the baseband processor which run at 2.8V). *Don't connect directly to your PCs serial port (running at +/- 12V!).* Regards, RM On Tue, Jun 7, 2011 at 12:13 AM, Otten, John E. <john.otten at gd-ais.com>wrote: > Don’t hold the power on button. You should just press and release the > power button to start the bootloader. > > > > Regards, > > John > > > > Hi, > > > > Thanks. > > I was able to access the serial port. > > > > I ran the following command > > > > ./osmocon -p /dev/ttyS5 -m c123xor > ../../target/firmware/board/compal_e88/hello_world.compalram.bin in cygwin > > > > I then held the power on button of the phone for some time. I got some > output on the cygwin console.It isn't the expected output as per the wiki. > > > > After disconnecting, I tried to run the same command and nothing is > happening. > > > > Can some one please suggest me what steps I need to take to solve the > problem. > > > > I am using Motorola C115 phone. > > > > Regards, > > RM > > On Sat, Jun 4, 2011 at 12:12 PM, Dieter Spaar <spaar at mirider.augusta.de> > wrote: > > Hello Harald, > > > On Sat, 4 Jun 2011 08:46:50 +0200, "Harald Welte" <laforge at gnumonks.org> > wrote: > > > > i have never heard of somebody doing this on windows 7. Almost everyone > > here uses Linux or MacOS. And the only prominent Windows user involved > > in the project is working with Windows XP. > > At least on my Cygwin installation under Windows XP the serial port > is accessible as "/dev/ttySx" (x is "0" for COM1, "1" for COM2 and > so on). All the USB to serial converters I am aware of are virtual > COM ports on Windows which means that they are accessible the same > way, e.g. if the virtual COM port is "COM7" it can be be accessed > as "/dev/ttyS6", > > Best regards, > Dieter > -- > Dieter Spaar, Germany spaar at mirider.augusta.de > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/baseband-devel/attachments/20110612/016624c1/attachment.htm>