Using Shark with MonoTouch, no symbols

I'm trying to use Shark to profile a release build of my iPhone app but I don't have symbol information. Everything is "Unknown library" and hex addresses. I followed these instruct开发者_如何转开发ions and added -nosymbolstrip -aot="iphone-abi" to Extra Arguments, but no luck.

This is on an iPhone 3G with OS version 3.1.2.

Just to see if it was due to my old OS version, I tried the same thing on my iPhone4 with 4.2.1 and I get a different issue. On that device, Shark won't even start profiling when I click Start.

Shark is no longer supported in the most recent XCodes. Use Instruments, instead.