Let me start off with I was an iPhone user for 4 years, just bought an S4 a month ago and have no idea what I'm doing. I should have just left it as it was out of the box So after attempting to install a custom rom (4.4.2 Play edition)my s4 is stuck at the Samsung I9505 boot screen. I wiped the 'Dalvik cache' 'System' and 'cache' partitions in TWRP as I was following along with a Youtube video (that didn't work). When I tried to flash the custom ROM it automatically said failed. After giving up and turning on the phone I found that I'm stuck at this screen. Have I bricked the phone? $550 could have gone down the drain just like that. I'm completely stuck and have no idea what to do, also don't want to touch it without any advice and make everything worse. My only hope now is that I've managed to wipe the original software and it has nothing to boot from. And why did the ROM install fail in the first place? I had it copied on the SD card. It was zip file. I can still access TWRP just fine and my SD shows up with the custom ROM still there, it's just whenever I hit install it fails in under a second. Please help, I just want everything to work again. Hopefully this post makes some sense to those who know what they're talking about.