Whats a good sdk download

I had to factory reset my computer to get rid of a ton of issues and free up space and i backed up my game obviously and was able to pull it all back up but the ue4 settings were deleted. So when i try to package my game it gives me a error saying the sdk settings arent set up. So i found a sdk download from android and i was able to package my game but when i download it to my phone it instantly crashes…so im pretty sure its the sdk link because before i reset my pc i was easily able to package it