Afraid of bricking my phone, what should I be concerned?
So recently Ive been doing lots of crazy/funny stuff with my phone like testing different ROM and boot images. I'm trying to do things as secure as possible, reading lots of threads before attempting things and trying to make sanity checks on procedures I read here on XDA. Despite of that, Im still unsecure about some principles:
For what I got, on the process of phone booting from power ON, it all starts at boot ROM. Boot ROM then calls the bootloader. At this point I have the first question: These custom boot images we use to upload to phone are the bootloader, right? So, considering we are not touching boot ROM (at least its what I supose as I never saw any reference on how to change boot ROM), if I use fastboot and upload a wrong or bad boot image I will be able to restore another boot image. I mean, theres no danger of definetely bricking my phone while playing with boot images as boot ROM remains untouched?
When I use flashtool to upload ftf images it will flash everything, including the bootloader, right? Again, if I use a wrong/bad ftf file the Boot ROM remains untouched, so no danger of definetely bricking my phone?
Im tempted to test some Cyanogem fork for Xperia M (among other stuff) but need/want to have this sort of questions sorted out first.
Should I post such newb questionsl ike this in here or in the development section of forum?