Hey MacRumors community, I have a 3GS with the old iBoot. Ever since that Cydia crash with the ZodTTD source, I was unable to use my Cydia. I didn't have OpenSSH on my phone, so I couldn't delete that source. Therefore, I decided to update to 3.1.3 via PwnageTool so I can use my Cydia again. So here is my problem I have right now... I decided to use PwnageTool 3.1.5 to update to 3.1.3 while keeping the 05.11.07 baseband so I can use it on T-Mobile. However, as soon as I run the blackra1n unlock on Cydia, it freezes up my phone completely. I am able to hacktivate and all, but I cannot run an unlock. I tried to downgrade to 3.1.2 (as I do have my SHSH for 3.1.2 stored on Cydia), but I am having trouble using Umbrella to do so. What are my choices right now?