I got a question. Everytime I power on my phone, SSH becomes enabled by default even though I turn it off through SBSettings. How can I can turn SSH off until I need it without it being enabled again by itself when I power on my iphone? Thanks.
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Install ToggleSSH (Cydia). When you turn off SSH with that, it doesn't come back on when you reboot. SBSettings lets it go back on by design (BigBoss thinks that is a safer way to boot: in case something goes wrong, you might have a time window to make a few repairs).

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iPhone 3GS / 3.1.2 JB (PwnageTool) / 04.26.08 carrier-locked, Carrier Logo Fixer / Cydia / 1000 posts on Hackint0sh

Installing Cydia programs on a phone that has no internet connection: read this.

Editing binary .plist, .strings, .nib and .xib files:
* on your computer: Windows tool / conversion website.
* on your iPhone: convert those files in a terminal with plutil (installed with Erica Utilities) or edit them with iFile (Cydia links).