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Ok, so I have searched the forums for a few days now and I'm still a bit confused on certain aspects of rooting and flashing roms.
Information:
Galaxy S5 Tmobile, SM-G900T
From what I gather from my build number I have NK2 Firmware.
It is USB debug enabled.
Drivers installed (Not with Kies so it won't interrupter the flash process.)
I have the latest version if Odin ready to go.
My understanding of the Root Process for my phone so far:
1. Find the Model of your phone and Firmware Version as well as take note on Android version. In my case from what I have read I'm going to want to downgrade to 4.2.2 to use towel root.
2. Install Drivers, set up USB debugging.
3. Download the proper ROM that you want to downgrade to making sure that it matches model and firmware.
4. Flash using ODIN following a tutorial I have saved from here.
5. Once flashed, use towel root to gain SU then Flash back over to 4.4.2 and you will have regained Root. After that you can use another ROM ETC.
Now here is where I'm confused. First off, I'm having a hell of a time finding the right ROM for me. I keep seeing explicit warning about flashing ROMS for the wrong build number. In my case it's NK2 as I stated earlier. I can't seem to find one for NK2 ANYWHERE. Also, I'm having a hell of a time finding the ROM for 4.2.2 for the G900T. What am I missing and what if anything in the instructions am I missing or potentially doing wrong once I do find the right ROM with Firmware NK2?
In short I just need clarification and possibly a pointer to the right direction of the needed ROM that's compatible with my Firmware NK2.
Any help would be much appreciated. I really am trying to read and learn as much as possible but with all the information here I'm not sure which to follow and what's outdated. Thanks.
What model (version) of s4 is exactly this phone? which software is installed on it? is it stock or not ? plzz help and tell me its complete version details
My phone is sgh-i337 or gt-i9505 ? Or only baseband version is i337...or any firmware version difference ? Help
Open the back and remove the battery. Look on the label. Unless the person who sold you the phone physically changed the label, or removed it, it will accurately tell you the hardware version of your phone.
Given that the boot loader and modem (baseband) are for the AT&T version, SGH-I337, it seems likely that the hardware is I337.
Edit: Also, check that it's not a cheap fake clone. There are apps that can check hardware, and run benchmarks, etc. Search "Genuine Galaxy" on the play store.
creepyncrawly said:
Open the back and remove the battery. Look on the label. Unless the person who sold you the phone physically changed the label, or removed it, it will accurately tell you the hardware version of your phone.
Given that the boot loader and modem (baseband) are for the AT&T version, SGH-I337, it seems likely that the hardware is I337.
Edit: Also, check that it's not a cheap fake clone. There are apps that can check hardware, and run benchmarks, etc. Search "Genuine Galaxy" on the play store.
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On back its printed gt i9505...and I installed genuine galaxy it also says its genunine and model gt i9505......but why baseband is different :/ ?
I think my baseband is of different phone but hows that possible...
why someone would change it...
ahsandon007 said:
I think my baseband is of different phone but hows that possible...
why someone would change it...
Click to expand...
Click to collapse
I've really no clue. I'm not aware whether an AT&T modem will even work on that phone.
If the hardware is genuine GT-I9505, then you will most likely get a more definitive answer in the XDA-Developers forum for that phone.
ahsandon007 said:
What model (version) of s4 is exactly this phone? which software is installed on it? is it stock or not ? plzz help and tell me its complete version details
Click to expand...
Click to collapse
It's most likely an I337 with an I9505 system. Either way, since the bootloader is i337, that means it's locked so if it ever was an I9505 it's not now, but mist likely it wasn't ever.
I checked indownload mode its sgh i337....can I install back stock firmware ...see this site http://www.att.com/esupport/softwareUpdateArticle.jsp?sid=KB419415&cv=820
is it possible to flash through odin this stock lollipop firmware?
Finally I got it....its i337...I checked imei on imei.info it says it is i337 and also checked for blacklist its all clean....and I opened back cover and see it and its written "MADE BY SAMAUNG" ...spelling of samsung is wrong ...it means sticker and software are of 9505 and hardware are i337 at & t usa carrier....I think its changed in korea...phone is converted....now planning to download stock firmware of i337 lollipop and install through odin...
if anyone have link plz share
ahsandon007 said:
Finally I got it....its i337...I checked imei on imei.info it says it is i337 and also checked for blacklist its all clean....and I opened back cover and see it and its written "MADE BY SAMAUNG" ...spelling of samsung is wrong ...it means sticker and software are of 9505 and hardware are i337 at & t usa carrier....I think its changed in korea...phone is converted....now planning to download stock firmware of i337 lollipop and install through odin...
if anyone have link plz share
Click to expand...
Click to collapse
The boot loader is locked, so you can't do this exactly. You can install stock KitKat, install safestrap, and upgrade to lollipop that way. You need to read through the forums to understand what you are doing before you proceed. I'd suggest you do quite a bit of reading, and only flash when you are sure you know what you want to do.
creepyncrawly said:
The boot loader is locked, so you can't do this exactly. You can install stock KitKat, install safestrap, and upgrade to lollipop that way. You need to read through the forums to understand what you are doing before you proceed. I'd suggest you do quite a bit of reading, and only flash when you are sure you know what you want to do.
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Send me links of threads from which I can understand and also which kitkat version should I install ...if u explain me in detail it will be helpful ..plz
ahsandon007 said:
Send me links of threads from which I can understand and also which kitkat version should I install ...if u explain me in detail it will be helpful ..plz
Click to expand...
Click to collapse
You seem to understand what you are doing. You should be able to figure this out on your own.
Start here.
Also this.
And this.
Or try some of the fine custom firmware in the Android Development forum.
ahsandon007 said:
(in a private message) Hey...there are so many things I cant understand in threads...can you plz tell me step by step how I can update to stock lollipop my sgh i337 ...safestrap etc..stuff ..thnx in advance
Click to expand...
Click to collapse
I do not own this phone, so I can't test or speak from personal experience. I already gave you the links to the information you need ^^^. I don't know if you can receive Over The Air (OTA) firmware updates. You may not be able to if you're not in USA. Also, I'm not sure if you need to be on an AT&T sim. If you can, you can get stock lollipop without root with this method: go to the "[GUIDE]Odin to Stock, Updating, Rooting, and Installing Safestrap" which is the second link. Go to the second post titled "Odin to Stock, Updating, Rooting, and Safestrap Instructions" and click the button to expand the instructions for "OPTION 1 - Stock Lollipop (No ROOT)"
If you cannot receive OTA updates, then currently your option would be to first flash NB1, manually flash the NJ4 update, root and install safestrap. In the Odin to Stock guide, perform both step 1 and step 2 under "NJ4 -- KitKat 4.4.4" After this, you can use the "[How-To] Update to I337_OC3 - 5.0.1 and KeepRoot (4/7/2015) " thread, which is the third link above ^^^.
Your third option would be to wait until the developers post a method for flashing Lollipop directly from Odin.
creepyncrawly said:
I do not own this phone, so I can't test or speak from personal experience. I already gave you the links to the information you need ^^^. I don't know if you can receive Over The Air (OTA) firmware updates. You may not be able to if you're not in USA. Also, I'm not sure if you need to be on an AT&T sim. If you can, you can get stock lollipop without root with this method: go to the "[GUIDE]Odin to Stock, Updating, Rooting, and Installing Safestrap" which is the second link. Go to the second post titled "Odin to Stock, Updating, Rooting, and Safestrap Instructions" and click the button to expand the instructions for "OPTION 1 - Stock Lollipop (No ROOT)"
If you cannot receive OTA updates, then currently your option would be to first flash NB1, manually flash the NJ4 update, root and install safestrap. In the Odin to Stock guide, perform both step 1 and step 2 under "NJ4 -- KitKat 4.4.4" After this, you can use the "[How-To] Update to I337_OC3 - 5.0.1 and KeepRoot (4/7/2015) " thread, which is the third link above ^^^.
Your third option would be to wait until the developers post a method for flashing Lollipop directly from Odin.
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Click to collapse
I successfuly updated to 4.4.2 stock NB1 software manually thorough odin then manually flashed NJ4 by stock recovery...now im not receiving ota update to lolipop....now what nxt to do ? should i root NJ4 and install OC3...
And actually I dont want to root i nedd unrooted stock OC3 ...if you know any direct method to flash..
After update to nj4 4.4.4 im getting delays in sending text msgs and making calls....what to do now should i flash different modem or baseband any ideas ?? :/
Now that you have updated your user account, we can see that you are in Faisalabad, Pakistan using Mobilink carrier. As far as I know, you will not be able to receive an over the air update, nor be able to use Kies to update. Someone who knows more could give a definitive answer on this.
Assuming that you will be unable to use OTA or Kies, your options are:
- root, install safestrap, install rooted OC3
- wait unitl (and if) developers post an Odin flashable version of stock unrooted OC3.
As far as your other issues, you could install the NB1 modem (baseband) and see if that clears up the issues, as it was working before.
creepyncrawly said:
Now that you have updated your user account, we can see that you are in Faisalabad, Pakistan using Mobilink carrier. As far as I know, you will not be able to receive an over the air update, nor be able to use Kies to update. Someone who knows more could give a definitive answer on this.
Assuming that you will be unable to use OTA or Kies, your options are:
- root, install safestrap, install rooted OC3
- wait unitl (and if) developers post an Odin flashable version of stock unrooted OC3.
As far as your other issues, you could install the NB1 modem (baseband) and see if that clears up the issues, as it was working before.
Click to expand...
Click to collapse
I downgraded modem to NB1 and no signal then i used OC3 modem it works bit better than previous one.....lags sometimes ...is there any way to flash 9505 modem to i337 phone ? :/
I upgraded to 5.0.1 using keeproot method of flashfire...thanks broo very very much.....
baseband problem still exists on OC3 modem....i maximum get 3/5 signal bars....can i flash i9505 modem using mobile odin or ant method ?
EDIT: i flashed successfuly 9505 modem but baseband version goes unknown and no sim/signal....is there any fix? Flashing efs?
What if I dwld 9505 lolipop from sammobile and install by odin or flashfire?
Dear Benevolent Android Wizards: please help me root an AT&T S4! I plan to buy a used S4 and want to make sure it can be rooted. Are some firmware versions rootable and some not? If so, which ones? I've seen phones available running I337UCUFNB1 and NJ4, as an example. I tried to check the forums here, but I'm new to this and it's too confusing. Also, as time passes, some of the comments become dated and wrong. One forums here say to downgrade NC1 by flashing NB1, take OTA update to NC1, then OTA to NL1- but I don't know if these OTAs are still available, for example. I'm simple and hope someone can explain things in a simple way! I don't want custom ROMs, just to root and maybe make backups. Please help, O Wise Ones!
You will probably buy a phone with at least 4.4.2 or above. It can be rooted by flashing the NB1 firmware (if it is not already on NB1), flashing the NC1 kernel and rooting with Towelroot. Then you can upgrade to 4.4.4 or 5.0.1, depending on what you want. You can install Safestrap to do backups on KitKat or Flashfire to do backups on Lolipop.
Here is a good place to start reading. Contains all info and links you need.
Thanks a lot!
So you're saying that any S4 running 4.4.2 or 4.4.4 should be able to be rooted?
And I would use Odin to flash NB1 firmware and then NC1 kernel (also using Odin?), then Towelroot would work?
How do I get the phone back to the firmware and kernel it came with?- also with Odin?
Yes. Or 5.0.1 for that matter.
You can root phones with earlier versions of the firmware as well.
All the instructions you need are available in the thread I linked above. You probably don't want to go back to what firmware came on the phone. You will need to decide if you want KitKat, in which case you should flash the latest one, which is NJ5, or Lolipop, in which case you will have some decisions to make as well.
Thanks, I will definitely read that whole thread once I get a chance.
Isn't there some issue with changing firmware where the software changes how the phone interfaces with the cell and wifi radios and they don't work right after you change version? Don't you have to do something to make sure the ROM and radio software stay in sync? Or isn't that an issue when changing stock ROMs with Odin?
Shouldn't be an issue. The stock firmware includes the corresponding modem, but the modems are interchangeable and can be flashed separately. There is a thread dedicated to modems in the general forum.
I would definitely recommend that you read enough to be comfortable with what you are going to do before you flash. There are several good threads in the general forum that you should familiarize yourself with.
Thanks again. I read 10 pages of the thread you mentioned in your first reply:
http://forum.xda-developers.com/galaxy-s4-att/general/guide-odin-to-stock-updating-rooting-t2926642
Very helpful
Another question- you said to load NB1 firmware on the phone, but also NC1 kernel, apparently, NC1 is required for towelroot to work. Why not just load NC1 firmware- won't the NC1 kernel will come along? Is NB1 firmware specifically needed for some reason?
Or did you mean to keep upgrading from NB1to reach the final desired firmware, say NL1, then flash the NC1 kernel, root with towelroot, then flash the final desired (in my example, NL1) kernel.
Also, the first section in that link says if you want to end up on Lollipop OC3 or OC4, to root using Kingroot, but warns "there is mixed feeling about this application". Can't I root with towelroot instead to avoid Kingroot?
Sorry! As I learn more it brings up new questions.
xdafan15 said:
Thanks again. I read 10 pages of the thread you mentioned in your first reply:
HTML:
http://forum.xda-developers.com/galaxy-s4-att/general/guide-odin-to-stock-updating-rooting-t2926642
Very helpful
Another question- you said to load NB1 firmware on the phone, but also NC1 kernel, apparently, NC1 is required for towelroot to work. Why not just load NC1 firmware- won't the NC1 kernel will come along? Is NB1 firmware specifically needed for some reason?
Or did you mean to keep upgrading from NB1to reach the final desired firmware, say NL1, then flash the NC1 kernel, root with towelroot, then flash the final desired (in my example, NL1) kernel.
Also, the first section in that link says if you want to end up on Lollipop OC3 or OC4, to root using Kingroot, but warns "there is mixed feeling about this application". Can't I root with towelroot instead to avoid Kingroot?
Sorry! As I learn more it brings up new questions.
Click to expand...
Click to collapse
NB1 is the only full stock tar available. There is no full NC1 stock tar, or any other 4.4.2 or above stock tar. No matter which distribution you are on, 4.4.2 4.4.4 or 5.0.1, to go back to stock you have to flash NB1 with Odin.
If you want Lolipop, I would suggest that you root with towelroot, and then use the keep root method to go to OC4.
I'm trying to decide if I should update up to NJ5, OC3, or OC4. Any thoughts about advantages/disadvantages? Should I just update to the latest (OC4) for simplicity?
I don't have an opinion between KitKat and Lolipop.
As far as OC3 or OC4, the OC4 update is just a bug fix update from OC3 that supposedly protects from at least part of the stagefright vulnerability. NJ5 is the same update with respect to JN4.
I'm making more progress on your thread- I'm up to page 20 now and feeling much more comfortable as I see how to deal with (or hopefully avoid) other's problems.
I think I'm almost ready to go, but I know I have one more question- I know that some versions of towelroot need internet access, but when you flash the NC1 kernel onto NB1, you lose wifi. I plan to do this on a phone that will not have data, at least at the beginning. I saw others talk about getting around this and they said they used an earlier version of towelroot that didn't need internet. Do you think that will work for me?
If I get a chance, I'll edit here and list the specific older version.
squatting in this thread because I too have an s4 w/ ni1 bootloader (4.4.2) .. gonna check that thread out too ... (fist bumps @xdafan15 .. me and u are the lone desperados)
got some good help too. check that thread about ALL THINGS ROOT in the general tab.
I found the version of towelroot v3 that doesn't need internet access. It is referenced here in the first post.
File here
@creepyncrawly or anyone else who knows: Is is OK to use this version to root instead of the normal version of towelroot 3 that needs internet access?
xdafan15 said:
I found the version of towelroot v3 that doesn't need internet access. It is referenced here in the first post.
File here creepyncrawly or anyone else who knows: Is is OK to use this version to root instead of the normal version of towelroot 3 that needs internet access?
Click to expand...
Click to collapse
Go ahead at try it. I don't actually have the S4, so I don't know from first hand experience, but it will either work or it won't. I expect it will work.
I got a surprise- I bought a used S4 and when I checked it, found out it has 4.2.2, MDL- one of the rare ones that was never updated and still has the unlocked bootloader! So all of the work I've been doing was somewhat off target.
Now I guess I need to root 4.2.2 and flash a custom rom to get the phone updated. If I update with the stock firmware it'll lock the bootloader permanently.
I found instructions to root on the first post here "[HOW-TO] The ULTIMATE All-In-One Guide - I337M & MDL - MF3 - MK2"
Is that the correct method?
I wonder if I can just load towelroot and root that way?
Can anyone suggest an updated ROM (preferably one that has been patched against stagefright)?
Do I also flash this phone using Odin? And does the firmware always go in the "AP" slot?
Sorry, I'm trying to learn this and I thought I'd be using the locked bootloader method in the 2nd post.
MDL oh don't let that bad boy ever update. You can root and unroot as often as you like.
Can you please help me understand what to do? I have a Samsung Galaxy s4 with AT&T that I switched to Straight Talk. I need to know how to root this phone but this forum is very confusing and outdated. Plz help me!
Hi, @Tmtd78. The S4 is getting pretty old now so this forum is pretty quiet. What version of android does your phone have? Under *Settings*, *About device*, what are the last 3 characters under *Build number*? I think every version of android on this phone can be rooted, but you will have to spend some time here to learn how everything works. Did you read the posts linked earlier by @creepyncrawly? Read the first and last 10 or 20 pages of each thread of interest and you will get the idea. The method you use will depend on the firmware your phone has. If it has the mdl or mdb bootloader, you probably will want to make sure the firmware doesn't update.
By the way, to @creepyncrawly and @engloa, thanks for your help. I was able to learn how to successfully root my S4, load a custom recovery, make backups, load a custom ROM, and make some tweaks to the kernel. Everything is running well now.
It was a long road, but everything was here on XDA and I appreciate your help.
@xdafan15, the build number is NI1. And I will definitely read the posts. I really appreciate you getting back with me so fast. I'm just scared I'm going to mess something up lol.
Sure thing. I'm not an expert, just a beginner, but I have learned a few things along the way. The NI1 bootloader is locked so you will need to follow the instructions for using Odin under the first post shown above by @creepyncrawly (here). Also, read this one. Also, this.
As long as you are 1) careful to not load code incompatible with an AT&T S4 onto your device and 2) follow instructions EXACTLY you should be fine. Be wary of following instructions listed on a forum that is not specific to the AT&T S4. Don't get sloppy and try to do stuff from memory- read and follow the instructions step by step. The good news is as long as you don't cause as few specific types of problems with your storage, I think you'll be able to Odin back to the NB1 firmware and start over.
Learn how to and practice booting your phone into download and recovery modes.
Get Odin running on your computer and see if it will recognize your device. A guide here. I think .tar or .tar.md5 files always go in the *AP* slot if memory serves. You may also see references to an older version of Odin where the *AP* slot was called *PDA*
Hey Guys,
I am a proud owner of a new S5 and I am no root newby as I had any other android devices before.
I read that it was possible to downgrade to 4.2 ANE2 Bootloader in order to root with Towelroot, so I might not trigger KNOX
But I read that the ne Models of the S5 have a locked bootloader, so a downgrade to ANE2 is not possible anymore.
Is this strill true?
I would love to see my Phone rooted but if its not possilble (its still in my package lol) I would rather send it back and decide for another phone -.- since I would like to keep my warranty intact.
Appreciate any answers
Regards!
the first thing when you ask put max information about your phone lol y know s5 have many series 900f 900h 900a and ....
Yup, need the model S5 first, then we can check if it can be rooted or not
Hey
it is 900f sorry I did not mention!
HustleberryFinn said:
Hey
it is 900f sorry I did not mention!
Click to expand...
Click to collapse
Flash this with ODIN
http://download.chainfire.eu/397/CF-Root/CF-Auto-Root/CF-Auto-Root-klte-kltexx-smg900f.zip
If that doesn't work, flash TWRP 2.8.7.0 with ODIN, then flash SuperSu.zip from TWRP recovery
As I said in my beginning post. I would like to have my warranty intact, so I guess rooting with CF Auto Root is not the best Idea, isn't it? (It triggers KNOX)
My Problem is simply, that I would like to know if a downgrade to an earlier bootloader is still possible if the device is delivered with Android 5.0.
You are describing the procedure for towelrooting......flashing an older kernel, using Towelroot and then re - flashing your original kernel. This has worked for many people (myself included) who were on KitKat before they rooted.......
You are on lollipop, this method won't work for you as flashing a KK kernel onto a lollipop firmware will more than likely make the phone unbootable. .....meaning you won't be able to use towelroot at all.
If you want rooted lollipop and knox at 0x0, you'll have to downgrade the entire firmware to KK, towelroot it and use Flashfire to return to your original but root injected lollipop firmware.
http://i.imgur.com/rVnFwJM.jpg
Rooting brand new s5 lollipop
Sorry if this a seems to be noob question (but i did not find any answer nowhere).
I want to root my S5 kltexx (G900F) through Odin3_v3.10.7 with TWRP.tar + UPDATE-SuperSU-v2.46.
Q:
What the difference between them (excepting date of publication and version)?:
- openrecovery-twrp-2.8.4.0-klte.tar
- openrecovery-twrp-2.8.4.0-gt-klte.tar
- twrp-2.8.7.0-klte.img
Which should i use?
Thanks in advance for answer.
triceraptor said:
Sorry if this a seems to be noob question (but i did not find any answer nowhere).
I want to root my S5 kltexx (G900F) through Odin3_v3.10.7 with TWRP.tar + UPDATE-SuperSU-v2.46.
Q:
What the difference between them (excepting date of publication and version)?:
- openrecovery-twrp-2.8.4.0-klte.tar
- openrecovery-twrp-2.8.4.0-gt-klte.tar
- twrp-2.8.7.0-klte.img
Which should i use?
Thanks in advance for answer.
Click to expand...
Click to collapse
lol install the last release if you want to be sure no bug with latest custom roms
@triceraptor The 2.8.7.0 seems to be the only version of TWRP that works with some Lollipop firmwares too......
The 'img' file you quoted won't work with odin....you need the .tar version.
Also, make sure re-activation lock is off before you start......otherwise this WILL interfere with the flash.
You *should* be able to find it under....
Settings>>Security......
http://i.imgur.com/rVnFwJM.jpg
keithross39 said:
You are describing the procedure for towelrooting......flashing an older kernel, using Towelroot and then re - flashing your original kernel. This has worked for many people (myself included) who were on KitKat before they rooted.......
You are on lollipop, this method won't work for you as flashing a KK kernel onto a lollipop firmware will more than likely make the phone unbootable. .....meaning you won't be able to use towelroot at all.
If you want rooted lollipop and knox at 0x0, you'll have to downgrade the entire firmware to KK, towelroot it and use Flashfire to return to your original but root injected lollipop firmware.
Click to expand...
Click to collapse
Hey! Thanks for your post!
My problem is, that it is mentioned that you cannot fully downgrade to KK because the new Devices with Lolli have a locked bootloader. And with that, downgrading to an older KK OS will not do anything because with a modern bootloader its not possible to use towlroot.
So my original intention was simply to find out if it is true - Do the new devices have a locked loader or not.
If your option works, I am glad to try it out, but with a locked loader your advice seems kind of complicated.
To the best of my knowledge. locked bootloaders are carrier specific......
AT&T and (I believe) Verizon are the primary culprits.....There may be 'enhanced security' on newer bootloaders/firmware, but that's a separate issue. If your device is the 'F' variant, which is used mainly in Europe and the UK, a locked bootloader shouldn't be an issue.....It *might* be necessary to flash a .pit file simultaneously to the downgrade though, just to make sure that *every* trace of the LP firmware is removed (this isn't required every time, but is there as an option if needed).
However you play it, it would be best to keep checking to see that re-activation lock is disabled, as this will only lead to issues if it becomes enabled.
http://i.imgur.com/rVnFwJM.jpg
HustleberryFinn said:
Hey! Thanks for your post!
My problem is, that it is mentioned that you cannot fully downgrade to KK because the new Devices with Lolli have a locked bootloader. And with that, downgrading to an older KK OS will not do anything because with a modern bootloader its not possible to use towlroot.
So my original intention was simply to find out if it is true - Do the new devices have a locked loader or not.
If your option works, I am glad to try it out, but with a locked loader your advice seems kind of complicated.
Click to expand...
Click to collapse
I agree with Kieth. I was 90% sure it was carrier specific. You could use the towel root method, but I have rooted my phone the Cf way, and already get 0x1 so there is no point for me. You should be able to flash an older firmware. Then just reset all data and reboot good as old.
Sent from my SM-G900W8 using Tapatalk
keithross39 said:
To the best of my knowledge. locked bootloaders are carrier specific......
AT&T and (I believe) Verizon are the primary culprits.....There may be 'enhanced security' on newer bootloaders/firmware, but that's a separate issue. If your device is the 'F' variant, which is used mainly in Europe and the UK, a locked bootloader shouldn't be an issue.....It *might* be necessary to flash a .pit file simultaneously to the downgrade though, just to make sure that *every* trace of the LP firmware is removed (this isn't required every time, but is there as an option if needed).
However you play it, it would be best to keep checking to see that re-activation lock is disabled, as this will only lead to issues if it becomes enabled.
http://i.imgur.com/rVnFwJM.jpg
Click to expand...
Click to collapse
Hey! Thanks again!
So I tried to downgrade but my screen of my new 900f stays totally black after downgrading.
I found a thread with the same problems - btw u participated in it as well- http://forum.xda-developers.com/galaxy-s5/help/custom-recovery-protection-samsung-t3135004/page8
Do you know any solutions for it? I would really like to use the towlroot method
Did you downgrade with or without pit?
As I mentioned in my earlier reply, the pit will erase EVERY trace of the old firmware from the device. Just make sure you get the CORRECT pit as flashing the wrong pit has the *potential* to permanently brick your device.
http://i.imgur.com/rVnFwJM.jpg
keithross39 said:
Did you downgrade with or without pit?
As I mentioned in my earlier reply, the pit will erase EVERY trace of the old firmware from the device. Just make sure you get the CORRECT pit as flashing the wrong pit has the *potential* to permanently brick your device.
http://i.imgur.com/rVnFwJM.jpg
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I haven't tried it with a PIT file yet, but ins on my schedule for tomorrow!
Just in Case - I search for tutorials right now - do I have to flash the pit simultaneously or is there any special order I have to do it?
With all my past devices I never had to put so much effort for a root -.-"
Lol.....newer device = bigger headache.
Yes the pit is flashed simultaneously....
Load it into odin as a file with pit extension (kinda obvious that one lol) and then load the firmware tar.....and flash.
Can't stress this enough though.......
MAKE SURE YOU GET THE CORRECT PIT.....
Good luck fella....
http://i.imgur.com/rVnFwJM.jpg
keithross39 said:
Lol.....newer device = bigger headache.
Yes the pit is flashed simultaneously....
Load it into odin as a file with pit extension (kinda obvious that one lol) and then load the firmware tar.....and flash.
Can't stress this enough though.......
MAKE SURE YOU GET THE CORRECT PIT.....
Good luck fella....
http://i.imgur.com/rVnFwJM.jpg
Click to expand...
Click to collapse
Got some time the last hour. With the pit file - worked perfectly and rooted! Knox 0x0.
Thank you very much for your effort!
Glad I could help fella......
http://i.imgur.com/rVnFwJM.jpg
keithross39 said:
Glad I could help fella......
http://i.imgur.com/rVnFwJM.jpg
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Click to collapse
Hey! Same problem again. I had to send the device with the working downgrade back, because the mic was defect -.-
Now I tried to do the Same stuff with PIT file, but this time the Phone screen stays black
(Downgrade to ANE with Pit file. No Samsung Logo and nothing...have to geht to the Downgrad Menu blind in order to Flash the old 5.0 LP OS. Then it works again)
Do you have and other advices for me?
Just to clarify it is possible to put your S7 to PD8 and technically "downgrade" your firmware . So to go from PG1 to PD8 you just need to flash the PD8 bootloader,AP, and CP in Odin.
*Doing this will wipe all your user data*
As far as I know this only works on SM-G930T !!!!
Please try it out and see if it works on your device.
EDIT: I got a video showcasing the whole process, it's a bit lengthy because i wanted to avoid all cuts in the video due the the suspicion that i may be switching devices ...
https://www.youtube.com/watch?v=G3Fd1s5kOhQ
Well this same thing has been said numerous times before, so do you have proof that it successfully works and also are able to flash other firmware?
As the other user said, if you have proof and can demonstrate how you were able to downgrade, please share with us. As far as I've seen/attempted, this isn't possible because of the bootloader version increment between the new firmware and the older ones.
KillerClaw321 said:
Just to clarify it is possible to put your S7 and technically "downgrade" your firmware from PG1 to PD8 you just need to flash the PD8 bootloader,AP, and CP in Odin.
*Doing this will wipe all your user data*
Click to expand...
Click to collapse
Have you done this yourself?
AFAIK, downgrading the bootloader isn't possible, as we have already seen in this thread. Please let us know how you were able to accomplish this. Screenshots would be greatly appreciated.
CafeKampuchia said:
Have you done this yourself?
AFAIK, downgrading the bootloader isn't possible, as we have already seen in this thread. Please let us know how you were able to accomplish this. Screenshots would be greatly appreciated.
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I have done this and will provide screenshots.
Please disregard the G935 version ... I am also running Echoe Rom ... I flashed PG1 Cp,Bl, and Ap . I set it up then I flashed PD8 Cp,Bl and Ap with Odin again ... it was successful no errors. Just to make sure I tried also flashing PB8 but that didn't not work and gave me an error. So I reflashed PD8 and installed Echoe Rom and that is currently where my phone stands. please try it out I need to confirm it works on other devices. I think it works because the PG1 bl is the same version as the PD8 bl. But I can't confirm this. If you tried leave your feedback!
Akira Takamedo said:
Well this same thing has been said numerous times before, so do you have proof that it successfully works and also are able to flash other firmware?
Click to expand...
Click to collapse
I tried to go from PG1 to PB8 and it didnt work so i tried from PD8 to PB8 but that also didn't work... It seems that it is only possible to go from PG1 to PD8
What is the benefit of downgrading to PD8? Can we flash the 930U firmware after this or it still keeps our bootloader on version 2?
NiN39Z said:
What is the benefit of downgrading to PD8? Can we flash the 930U firmware after this or it still keeps our bootloader on version 2?
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I don't know own which variant the 930U is but There isn't really a benefit besides people saying that PD8 runs better than PG1 or vice versa.