If I can get into recovery mode, how should I push a custom rooted rom onto it? Or perhaps should I download an official firmware for the S4, and push it to install via the official way of using Odin + download mode? Can't seem to remember parts of it since the last time I dealt with Odin was 1 1/5 years ago on my S3.
PS. Is download mode the same like on the s3? Ie, power button + home + volume down
EDIT. Called the seller, apparently the phone doesn't even display the samsung logo. Should I give up? Could be some hardware issue or idk.