[Q] SGS4 LTE / Bootloader unlocking / 4.3 FW - Galaxy S 4 Q&A, Help & Troubleshooting

I have recently flashed S4 snapdragon with 4.3 FW. Now that I want to install custom rom onto it. (Going to root with chainfire autoroot and I am not worried about the knox flag.) But since the bootloader is locked , will i be able to unlock it? For the purpose of flashing custom zip (via recovery) an unlocked bootloader is needed? If not can i downgrade the FW to 4.2.2 in Odin by any chance?

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[Q] [SM-N9005]Root question

Hey,
I have an unrooted SM-N9005 with the N9005XXUBMJ3 Firmware. I read that I can't root this device without triggering the knox counter, because the mj3 firmware has a locked bootloader.
Is there any other way to root it? Is it possible to flash an older firmware with older bootloader before rooting?

Flashing new modem and bootloader

I'm on Towelrooted stock 4.4.2 on N9005.
Is it possible to flash only modem N9005XXUGNJ2 and bootloader N9005XXUGBOA5 from Lollipop without upgrading the firmware, and will it have any advantages over the stock Kitkat modem and bootloader?

Root G900F ITALY and ota updates

Hi guys I want to root my G900F bod3 version,But there are no root method so I've downgraded to kitkat and root with towelroot and flash a stock fw by flashfire..so I have a rooted stock fw with Knox 0x0
My stasus on download mode is "custom" and can't update via ota!!!is there a way to update future updates without reflash with Odin?

Downgrading S4 i337 from 4.4.2 (NB1) to 4.2.2 (MDL) using Odin

Hello,
I have S4 i337 and it is on 4.4.2 (NB1) and tried to downgrade it to 4.2.2 (MDL) using Odin but it fails. I want to know what might be the reason behind this failure. Help me resolve the issue.
Does the phone have a locked bootloader?
Up UP UP, wish people helping to unlock bootloader
Once you're on Android 4.3 or higher you cannot downgrade your bootloader (with the exception of NB1 I think it is) to an older version as Samsung has added in extra protections against such.

How To Update Lolipop Bootloader to Marshmallow SM-G900F?

I am trying to update my bootloader from Lollipop G900FXXUU1BOD3 on my galaxy s5 using ODIN V3.12.3, to MARSHMALLOW Bootloader so I can flash a MM rom - Where do I find a bootloader and modem that will work with my device on mm in the UK?
sammobile will have the Marshmallow firmware which includes bootloader and modem. Flash that to be on stock unrooted marshmallow. You will lose your custom recovery if you had one before and will need to flash a new one.
If for whatever reason you want only the bootloader and modem - they can be extracted from the zip file via winrar.

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