1. get the ziphone without gui. then you can manually input the commands. don't use ziphone gui 2.4. if you want GUI, try use ziphone by other people like unlock.no or modmyifone - they've made their own GUI with older ziphones. otherwise avoid it totally and use ijailbreak.
2. im using 1.1.3 with bb 4.02, and i have signal. they say by no signal is when doing the geohot unlock they didnt kick it out of brick mode. use bricktool. or, do the old trusty method (which eliminates ziphone as well) - restore to 1.1.1, jailbreakme.com (if you have 1.1.3 OTB you must do baseband downgrade in installer), install geohot unlock (by now you will have no signal), update to 1.1.2 (signal issue will be fixed), then do an iclarified upgrade to 1.1.3 if you wish so (your bb will remain at 4.02). don't use the official dev team 1.1.3 updater (ppl have gone wrong with it).
3. since you have an 1.1.3 OTB why not give ijailbreak a try, because it's the least time wasted... the worst is you must follow point 2 (above).
note. 1.1.3 paired with 4.02, the google locate me will not work (incompatible baseband). the solution to that is to install "LocateMe" in installer.