gzt: Agree with above. The case as presented is very simple from my pov. You did not flash it. The warranty is not void. If they want to investigate then that is what they will find. It is not up to you to prove anything.
You have to start the process at some point. It might as well be sooner than later. Just send it back already ; )
Thanks, but it isn't "simple". At this point I do not know if the fault is hardware or firmware. Warranties do not cover user created faults. If it is firmware the retailer -based on the odin screen info- could claim I caused the fault and how can I prove otherwise? Simply claiming "I didn't do it" isn't really proof. I am also wise enough to know that some online retailers look for loopholes to get out of warranty claims.
I believe an ounce of prevention is better than a pound of cure. Just because I believe I am covered doesn't mean the retailer will feel the same way, and just because NZ has great consumer laws doesn't mean I am instantly in the right and the retailer has to do what ever I say. I know the real world doesnt work like that. I am in contact with the retailer and am waiting a response before sending it back.