Right now I have two CID 15 G900Vs with PB1 rooted 5.0 firmware and OD5 bootloader. I'd like to use the spare to try out MM 6.0.1 rooted using the unlock procedure.
I know that loading a post-OD5 stock bootloader is irreversible. If I use the procedure here:
https://forum.xda-developers.com/ve...t/rd-unlocking-galaxys-s5-bootloader-t3337909
to install an unlocked bootloader, is that an irreversible change? Will I be unable to go back to an earlier (OD5) bootloader or firmware after the unlock procedure?
If I use this procedure:
https://forum.xda-developers.com/verizon-galaxy-s5/general/update-qi2-t3688046
and install
Developer Bootloader Friendly/No Aboot No-Wipe Firmware:
G900VVRU2DQI2_G900VVZW2DQI2_G900VVRU2DQI2_HOME_No_ Aboot.tar.md5.zip
will I trip a KNOX flag or set any fuses or otherwise do anything that cannot be undone? I'd love to play with this stuff but want to make sure I can back it out if necessary.
Thanks,
Mike
Related
I want to install a linux OS, however, I am getting errors concerning permissions and/or looped devices (I have removed Knox). I believe I need a different Kernel.
My device was rooted yesterday (Odin for PC), by a friend as I do not have access to a windows machine and couldn't get Odin working via a VM. I can confirm that I now have root access.
When I boot into download mode it says: qualcomm secureboot: enable (csb) - I assume this means my bootloader is locked?
Is it possible to unlock the bootloader, without using a windows PC, so that I can install a recovery and use Omega Files Pro (or similar) to flash an Omega rom? Is it even necessary to unlock my bootloader in order to flash a rom (my warranty is already void, but I do not want to brick/damage my phone)?
Thank you for your help.
Bootloader can not be unlocked at this time.
The locked BL makes it impossible to downgrade from KK to JB. But you can flash roms/recovery/kernel.
Read the guide that is linked in my sig to see how.
Khizar said:
The locked BL makes it impossible to downgrade from KK to JB. But you can flash roms/recovery/kernel.
Read the guide that is linked in my sig to see how.
Click to expand...
Click to collapse
Just make sure if you're on KK then you flash a KK rom....
I hit on UPDATE on the phone for an OTA update but it only says UNABLE TO CONNECT AT&T SERVER. When I bought it, it had 5.0.1 (I337UCUGOC3) out of the box. Searching on internet says that is bootloader locked (so I cant do anything).
- Can I Update to I337UCUGOK2 and bootloader will be unlocked (I mean, will I be able to do it)?
- Does anyone know where can I grab I337UCUGOK2 for offline install and is it ODIN safe to update it (remember I have I337UCUGOC3 bootloader locked)?
please help
Once the bootloader is locked, it will always be locked until someone finds a way to unlock it. Updating the bootloader will not allow it to be unlocked.
cybercuate said:
I hit on UPDATE on the phone for an OTA update but it only says UNABLE TO CONNECT AT&T SERVER. When I bought it, it had 5.0.1 (I337UCUGOC3) out of the box. Searching on internet says that is bootloader locked (so I cant do anything).
- Can I Update to I337UCUGOK2 and bootloader will be unlocked (I mean, will I be able to do it)?
- Does anyone know where can I grab I337UCUGOK2 for offline install and is it ODIN safe to update it (remember I have I337UCUGOC3 bootloader locked)?
please help
Click to expand...
Click to collapse
Unlocking/exploiting the bootloader for the AT&T is still in process, I think.
Bootloader locked means you can not install custom recovery like TWRP, CWM or custom kernel. You can still root, you can still use odin and you can still install custom rom using either safestrp or flashfire.
Here is the thread explaining how to upgrade stock or rooted stock roms.
The explanation starts from installation of NB1 firmware so that you can easily root the phone by using twolroot.
If you do not care for the root you can start reading from the step 2 "Flash update in stock recovery"
Since you are on OC3, you need OC3 to OC4 and OC4 to OK2 files to get OK2.
help... I want to RMA it
sway8966 said:
Unlocking/exploiting the bootloader for the AT&T is still in process, I think.
Bootloader locked means you can not install custom recovery like TWRP, CWM or custom kernel. You can still root, you can still use odin and you can still install custom rom using either safestrp or flashfire.
Here is the thread explaining how to upgrade stock or rooted stock roms.
The explanation starts from installation of NB1 firmware so that you can easily root the phone by using twolroot.
If you do not care for the root you can start reading from the step 2 "Flash update in stock recovery"
Since you are on OC3, you need OC3 to OC4 and OC4 to OK2 files to get OK2.
Click to expand...
Click to collapse
Everywhere says I need a kitkat rom as base.
My s4 came with 5.0.1 with OC3 and bootloader locked out of the box. I tried some post where says I can flash TWRP and CWM but my phone stucked on bootloops. Then I managed to get back to stock rom and now when I want to turn it on it says " SAMSUNG (and lower on the screen) Custom"
Camera began to fail and I want to return it as RMA but I was looking to reset the flash counter but every post I read is that OC3 bootloader locked users are just doomed.
Do you know a method that I can do for reset that counter?
Camera dont focus anymore and I tried all the posts about safemode, etc.
cybercuate said:
Everywhere says I need a kitkat rom as base.
My s4 came with 5.0.1 with OC3 and bootloader locked out of the box. I tried some post where says I can flash TWRP and CWM but my phone stucked on bootloops. Then I managed to get back to stock rom and now when I want to turn it on it says " SAMSUNG (and lower on the screen) Custom"
Camera began to fail and I want to return it as RMA but I was looking to reset the flash counter but every post I read is that OC3 bootloader locked users are just doomed.
Do you know a method that I can do for reset that counter?
Camera dont focus anymore and I tried all the posts about safemode, etc.
Click to expand...
Click to collapse
Flashing TWRP and CWM is for the AT&T S4 with older bootloader (MDL, MDB). After that two firmware versions the bootloader is locked.
For AT&T S4 the last full firmware released is NB1. After that they released incremental updates via OTA. That is why you need kitkat (NB1) as base.
For NB1, Muniz uploaded two firmwares. One is the stock and the other is rootable stock. Try the stock one and see you still have the custom symbol.
To reset the counter, there is an app calls Triangle away by Chainfire. However, it does not work on AT&T S4 with locked bootloader.
Trying Odin-Stock NB1
sway8966 said:
Unlocking/exploiting the bootloader for the AT&T is still in process, I think.
Bootloader locked means you can not install custom recovery like TWRP, CWM or custom kernel. You can still root, you can still use odin and you can still install custom rom using either safestrp or flashfire.
Here is the thread explaining how to upgrade stock or rooted stock roms.
The explanation starts from installation of NB1 firmware so that you can easily root the phone by using twolroot.
If you do not care for the root you can start reading from the step 2 "Flash update in stock recovery"
Since you are on OC3, you need OC3 to OC4 and OC4 to OK2 files to get OK2.
Click to expand...
Click to collapse
sway8966 said:
Flashing TWRP and CWM is for the AT&T S4 with older bootloader (MDL, MDB). After that two firmware versions the bootloader is locked.
For AT&T S4 the last full firmware released is NB1. After that they released incremental updates via OTA. That is why you need kitkat (NB1) as base.
For NB1, Muniz uploaded two firmwares. One is the stock and the other is rootable stock. Try the stock one and see you still have the custom symbol.
To reset the counter, there is an app calls Triangle away by Chainfire. However, it does not work on AT&T S4 with locked bootloader.
Click to expand...
Click to collapse
Thanks. I'll try Odin it with the stock rom from your link. I'll post news here when it finish flashing
1st part - Success
I'm on 4.4.2 NB1, flash counter back to normal but still bootloader locked
Now I have to go back to OC3 to RMA it.
OTA does nothing, smartswitch shows no updates neither kies.
I'll have to Odin it back to OC3
Can I have some help?
And Success. I'm back on stock OC3 no root.
time to RMA
- camera still doesn't focus
- boot screen is back to normal but when in odin mode the counter shows 0x1
- sometimes shows "sim card could not be detected" or similar messages and force me to restart the phone (just happend 2 times until now, never happend before)
I followed this thread
http://forum.xda-developers.com/galaxy-s4-att/general/guide-odin-to-stock-updating-rooting-t2926642
Post 2
Thanks to sway8966
The phone's bootloader is probably locked. It has never been unlocked, and I believe model SM-G900M was sold with the bootloader locked. (I tried to check if the bootloader is indeed locked, but fastboot did not detect the phone.)
I understand that in this scenario there is currently no way to root an S5, right?
It appears that the only way to go is to perform an Android downgrade. I would have to use Odin to flash a stock 4.4 ROM (is this correct?), then I would be able to root the phone with towelroot, unlock the bootloader and install flashfire on my device. Does this sound like a doable approach?
Suggestions/advice very much appreciated.
Thanks!
I'm on G900VVRU2BPB1 and I believe my bootloader is locked as I did root my phone and the samsung unlock app did not unlock my bootloader. I am rooted and I am wondering, there a way for me to go to MM and keep root? Or am I stuck at LP? If I read the information correctly, I am stuck at LP if I want to keep root correct?
If you're CID 11 the bootloader cannot be unlocked. Also there is no root method as of now for marshmallow. You must flash back to PB1 (lollipop) and root and unlock if possible.
Okay, here is the deal. I was trying to install a costum rom on my att galaxy s4. What I did was I rooted it using king root and tried to flash a rom through rom toolbox, but I believe it was just going to take me to my recovery. After that the screen got stuck on the costum screen with the padlock, and only seems to turn on with a charger plugged into it. I am on 5.0.1 lollipop and have managed to flash the original recovery, but any stock rom I try to flash using Odin fails by saying complete thread failed or something like that, and says on my phone binary 1 or something like that. I really need help on where to start.
Thanks
What is the exact Odin error?
AT&T never released a full firmware for flashing via Odin beyond 4.1.2. Look here for a possible solution: https://forum.xda-developers.com/ga...-to-update-to-i337oc3-5-0-1-keeproot-t3075814
Once the phone is running a 4.3 or higher bootloader, the bootloader is locked and custom ROMs can't be installed unless the custom ROM is based on a stock ROM.
There's an ODIN flashable Android 4.2.2 MDL bootloader tar file out there somewhere too.
If the bootloader is locked, and it sounds like it is since it's running 5.01, Odin will not be able to flash a 4.2.2 ROM or bootloader.
audit13 said:
If the bootloader is locked, and it sounds like it is since it's running 5.01, Odin will not be able to flash a 4.2.2 ROM or bootloader.
Click to expand...
Click to collapse
Are there any other options, or should I just give up on it?
Look at this thread: https://forum.xda-developers.com/ga...-to-update-to-i337oc3-5-0-1-keeproot-t3075814.
Pay attention to this part of the post which may help:
Notes:
1. The above process will not affect your Knox Warranty Flag.
2. The process will update your Modem, Non-hlos, System, Kernel, and Stock Recovery.
3. No need to wipe prior to flashing! The ROM will automatically perform a factory data reset.
4. If you are not already rooted (or to unbrick) you must first flash the I337UCUFNB1_Rootable_Full_Odin.tar (use Odin's PDA slot (AP in Odin v3.09+), root with Towelroot, then proceed with the above process.
5. To learn more about FlashFire's capabilities on locked bootloader devices see here: http://forum.xda-developers.com/show...10&postcount=2
audit13 said:
Look at this thread: https://forum.xda-developers.com/ga...-to-update-to-i337oc3-5-0-1-keeproot-t3075814.
Pay attention to this part of the post which may help:
Notes:
1. The above process will not affect your Knox Warranty Flag.
2. The process will update your Modem, Non-hlos, System, Kernel, and Stock Recovery.
3. No need to wipe prior to flashing! The ROM will automatically perform a factory data reset.
4. If you are not already rooted (or to unbrick) you must first flash the I337UCUFNB1_Rootable_Full_Odin.tar (use Odin's PDA slot (AP in Odin v3.09+), root with Towelroot, then proceed with the above process.
5. To learn more about FlashFire's capabilities on locked bootloader devices see here: http://forum.xda-developers.com/show...10&postcount=2
Click to expand...
Click to collapse
I finally fixed it. I had downloaded that rom before, but it hadn't worked. I decided to try it again and used a different USB port and it worked! Thanks for the help!