What happens when you set your jailbroken iPhone to "fast respring" (that is, turn on one of the SpringBoard relaunching options) via BossTool, and SpringBoard crashes? Safe mode, apparently. Who knew that Safe Mode even existed on the iPhone? I certainly didn't until TUAW reader Max S. sent in the pictures below.
Safe Mode apparently disables certain system extensions. You can get out of safe mode by rebooting. So let's see, a blue screen of doom and safe mode. Hmmm. I thought this phone was manufactured by Apple. Where's Seinfeld?
Anyway, this isn't the first time the topic of iPhone's Safe Mode has come up. I googled up this Austrian page and a few other hits -- most of which seemed to appear in September of 2008, after the recent firmware upgrade.
Know anything about Safe Mode and the iPhone? Drop a comment and tell us more.
Update: Readers do know more! They point out that this is a Winterboard feature and not part of Apple's firmware.