Just recently got an S4 I337, not sure of what to do with it.

[iiPostMaster]

I know where to get MD5s I can dowload with Odin to restore the stock firmware, and I was wondering if flashing a 4.2.2 over 4.4.2 would be possible to allow bootloader unlock. I'd really appreciate a quick response, because I planned on returning it soon! Thanks in advance to anyone who replies!

 

[StoneyJSG]

I know where to get MD5s I can dowload with Odin to restore the stock firmware, and I was wondering if flashing a 4.2.2 over 4.4.2 would be possible to allow bootloader unlock. I'd really appreciate a quick response, because I planned on returning it soon! Thanks in advance to anyone who replies!

Once you have updated past 4.2.2 , there is no going back. The bootloader exploit (loki doki) was patched in the 4.3 update.

 

[iiPostMaster]

Once you have updated past 4.2.2 , there is no going back. The bootloader exploit (loki doki) was patched in the 4.3 update.

Alright, tyvm for letting me know.

 

[StoneyJSG]

However you can run safe strap recovery and boot Samsung based custom ROMs like Golden eye ROM which is a really good ROM. I'm using it on my s4 with the MDL bootloader and loki doki.