Check SPL?

[Turnkeys]

Is there a way to check which bootloader is installed within the OS? I've always been nervous about flashing after reading the various "bricking" posts, and thus have only flashed a few times.

Currently running stock 3.56.651.0
Radio: 3.42.02

I seem to recall having to flash several times to get the rom & radio to load, and I *think* I upgraded to Olipro 2.40, but I can't recall. I'm at work and not ready to start flashing, but I'd like to peek here and there to evaluate my options.

If I can't check the bootloader within the OS, can I load the bootloader w/o starting a flash? Start it and reboot?

I've been dealing with a problem with being able to answer calls, (data won't release to answer) and getting sick of it, so I'm getting ready to take the plunge. Suggestions welcome.

Thanks.