[AC Question]

i was trying to remove the root access i put on it and it shut off outta nowhere and if i aint mistaken.. is not hard bro=icked... wont start into recovery or anything... my computer makes a sound when i connect it but after that nothing

[SigmundSL]

You can try to get the phone in download mode and then reflash it, here's some info on XDA

Frequently Asked Questions | Samsung Galaxy S 4 i9500, i9505, i9505G, i9506 | XDA Forums

[VampireSmith]

how wuld i throw it into download mode?

[Rukbat]

Volume Down+Home+Power. When you get the warning, go to download mode, don't reboot.

Use Odin and a copy of your phone's ROM from SamMobile Firmwares (enter the model number, not S4) to reflash.

If you can't even get to download mode, look on ebay for Samsung Download Dongle. The 88 cent ones are the same as the $4 ones, so buy the cheap one. Short instructions - remove the battery, plug the dongle into the microUSB connector and replace the battery. If it doesn't power up, press the power button.

If it's still dead, take it to a repair shop - it may need hardware replaced.

[VampireSmith]

is all that possible with the device being hard bricked?

[Rukbat]

That's the reason for the dongle - bringing a hard-bricked Samsung S series (I don't know if it works with other Samsungs) to download state. If it's even harder bricked, only a JTAG box will bring it back. If it's hard-bricked because of hardware failure (usually something really bad on the motherboard) nothing but replacing the bad hardware will fix it.

"Hard brick" merely means that the phone acts as if there's no battery in it. No matter what buttons you push in what order or combination, nothing happens. It doesn't define why. (A soft brick means that the phone does something, but not what it's supposed to.) Technically, I guess a phone with no battery is hard-bricked - but the solution is to put the battery back in.

[VampireSmith]

is there a way to make a jtag homemade? i do not have money to go onlice n buy one... so can i do the same type of procedure with just a computer?