1st I don't think it's related to ROM
Boot into download mode by keep pressing power, home and volume down button and then click volume down button to boot into system or open recovery and boot from there. You can easily boot like this without disconnecting charger
On this phone at the moment. Since you need to unlock boot loader to flash/root anything, so does flashing a custom rom's first step is to unlock boot loader as far as my research goes. However I searched and Google everything relevant to it but can't find a way to unlock it. Though came across some comments that it comes unlocked but am unsure about it. My question is does the bootloader really comes unlocked? A little confirmation to it will be great help. Thank you.
Simple thought: There's no such fact that we need to "unlock" bootloader for Samsung devices (except Nexus series)
For new devices starting from Android 5.0 and above, another step is to enable "OEM unlock" in Developer options, so that we can freely install any custom ROMs or recoveries we want
One more question . I want to root but the type of root interface I'm looking for only supports 5. 0+ versions of roms and mine is 4.4.4. So what if I flash a 5. 0+ rom through custom recovery without rooting first and then flash my desired rooting interface? Is it possible to do that?
#include <std_disclaimer.h> /* * Your warranty is now void. * * I am not responsible for bricked devices, dead SD cards, * thermonuclear war, or you getting fired because the alarm app failed. Please * do some research if you have any concerns about features included in this ROM * before flashing it! YOU are choosing to make these modifications, and if * you point the finger at me for messing up your device, I will laugh at you. * */
BETA-4: Drive link