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Background: I had updated to OA1 4.4.4 on s5 900A. I had some issues, so I decided to downgrade as described in the upgrade thread here: http://forum.xda-developers.com/att...to-root-g900aucu2aoa1-4-4-4-2-3-2015-t3021120.
I would downgrade by flashing in odin the G900A_Downgrade_to_NCE.tar, as well as the G900A_ND3_Stock_Kernel, rerooting with towelroot, installing safestrap, and flashing one of the many 4.4.2 roms.
However, upon boot all of the 4.4.2 roms would be laggy, I would sometimes get a green/pixilated effect on the lockscreen when unlocking, and battery life would be sub par. I came across this app on play store:https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo&hl=en , and even though I had downgraded the kernel, the bootloader read as OA1, even after flashing in Odin the ND3 stock kernel.
I believed that was causing the issues I was having, and was under the impression that the bootloader could not be downgraded. In a fit of frustration I did the following, and fixed the problem!
Solution:
This is not a step by step, but a rough approximation of what I did, if you need more detail, just ask.
1. I downloaded and put on my SD card G900A_NCE_to_NG3_OTA.zip https://www.androidfilehost.com/?fid=95916177934525665
2. In odin 3.09 I flashed G900A_Downgrade_to_NCE.tar https://www.androidfilehost.com/?fid=23622183712464416,
3. Also in the AP slot I flashed G900A_ND3_Stock_Kernel https://www.androidfilehost.com/?fid=23622183712464356
3. My phone was unrooted at this time. I let it boot up, downloaded the Phone INFO ★Samsung★ to the phone from the playstore, opened and my bootloader remained OA1. The camera was normal, and the boot was slow, so I was where I was many times before.
4. I shut down the phone, I rebooted holding volume up, power and start until I got to the standard, built in samsung recovery.
5. I located my download of G900A_NCE_to_NG3_OTA.zip, and flashed it via the samsung recovery. It took about 5 minutes.
6. The phone rebooted, and the phone info app said I had and NG3 baseband! It had downgraded! However, towel root was not compatible.
7. I flashed in odin G900A_ND3_Stock_Kernel again. Now towelroot rooted the phone. I installed busybox and superuser from the playstore, then safestrap again.
Now I can flash any of the 4.4.2 roms, none of the slowbooting, stuttering lockscreen or battery issues seem to be present, and Phone INFO ★Samsung★ has my baseband and bootloader as NG3.
All credit goes to muniz_ri, these are all his tools! I just stumbled across this method and thought others might benefit.
I can confirm this.
I was on OA1 after flashing OA1 OTA zip from recovery.
Later, I downgraded by flashing G900A_Downgrade_to_NCE.tar. Bootloader after this was OA1.
Flashed G900A_NCE_to_NG3_OTA.zip from recovery. Bootloader and baseband changed to NG3.
Bootloader and Baseband version was verified using 'phone info' app from play store.
yoonus said:
I can confirm this.
I was on OA1 after flashing OA1 OTA zip from recovery.
Later, I downgraded by flashing G900A_Downgrade_to_NCE.tar. Bootloader after this was OA1.
Flashed G900A_NCE_to_NG3_OTA.zip from recovery. Bootloader and baseband changed to NG3.
Bootloader and Baseband version was verified using 'phone info' app from play store.
Click to expand...
Click to collapse
does that ota have to be used if your on stock nce? im running alliance rom right now... also can it be flashed in SS?
iamthedj said:
does that ota have to be used if your on stock nce? im running alliance rom right now... also can it be flashed in SS?
Click to expand...
Click to collapse
I think it can be flashed only from stock ROM. This is stock OTA.
yoonus said:
I think it can be flashed only from stock ROM. This is stock OTA.
Click to expand...
Click to collapse
forgot i had a stock nce rooted backup so just started from there flashed the ota in sammy recovery and bam back to the old bootloader thanks a bunch man much appreciated
I think I will give this a try in the next few days. I'm on the rooted 5.0 by muniz_ri and I love Lollipop but I miss being able to flash custom roms.
MetalHead66 said:
I think I will give this a try in the next few days. I'm on the rooted 5.0 by muniz_ri and I love Lollipop but I miss being able to flash custom roms.
Click to expand...
Click to collapse
Likewise, just did it, I found with me, the OTA zip file would not install with the ND3 kernel installed. So I did the original odin downgrade to NCE, booted, then the OTA zip file, booted, Then the ND3 kernel Tar file in odin. Worked .Good luck:good:
so the nce to ng3 downgrade goes in the ap or BL?
Vortex_User said:
so the nce to ng3 downgrade goes in the ap or BL?
Click to expand...
Click to collapse
NCE. to NG3. OTA zip is done in original recovery by pressing power + volume up + home key. Then install update from Sd external.
i fixed my phone with this!
thanks!!!!!!!
maxirn05 said:
i fixed my phone with this!
thanks!!!!!!!
Click to expand...
Click to collapse
+1
was on Muniz 5.0, downgraded to xtreme dynamic kitkat. Still had oa1 bootloader, and was laggin really bad on boot.
Flashed this in stock recovery (wipes data part ) and reloaded my apps.
All seems to be well, without the need to go back to stock in between.
Thank you - this totally worked for me and got rid of the lag in my 4.4.2 ROM (XDK) as I had taken the upgrade to 4.4.4 way back when!
Hi,
do you do step 2 & 3 at the same time?
which field in Odin do you put the .tar file?
Thanks,
h
dave812 said:
Background: I had updated to OA1 4.4.4 on s5 900A. I had some issues, so I decided to downgrade as described in the upgrade thread here: http://forum.xda-developers.com/att...to-root-g900aucu2aoa1-4-4-4-2-3-2015-t3021120.
I would downgrade by flashing in odin the G900A_Downgrade_to_NCE.tar, as well as the G900A_ND3_Stock_Kernel, rerooting with towelroot, installing safestrap, and flashing one of the many 4.4.2 roms.
However, upon boot all of the 4.4.2 roms would be laggy, I would sometimes get a green/pixilated effect on the lockscreen when unlocking, and battery life would be sub par. I came across this app on play store:https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo&hl=en , and even though I had downgraded the kernel, the bootloader read as OA1, even after flashing in Odin the ND3 stock kernel.
I believed that was causing the issues I was having, and was under the impression that the bootloader could not be downgraded. In a fit of frustration I did the following, and fixed the problem!
Solution:
This is not a step by step, but a rough approximation of what I did, if you need more detail, just ask.
1. I downloaded and put on my SD card G900A_NCE_to_NG3_OTA.zip https://www.androidfilehost.com/?fid=95916177934525665
2. In odin 3.09 I flashed G900A_Downgrade_to_NCE.tar https://www.androidfilehost.com/?fid=23622183712464416,
3. Also in the AP slot I flashed G900A_ND3_Stock_Kernel https://www.androidfilehost.com/?fid=23622183712464356
3. My phone was unrooted at this time. I let it boot up, downloaded the Phone INFO ★Samsung★ to the phone from the playstore, opened and my bootloader remained OA1. The camera was normal, and the boot was slow, so I was where I was many times before.
4. I shut down the phone, I rebooted holding volume up, power and start until I got to the standard, built in samsung recovery.
5. I located my download of G900A_NCE_to_NG3_OTA.zip, and flashed it via the samsung recovery. It took about 5 minutes.
6. The phone rebooted, and the phone info app said I had and NG3 baseband! It had downgraded! However, towel root was not compatible.
7. I flashed in odin G900A_ND3_Stock_Kernel again. Now towelroot rooted the phone. I installed busybox and superuser from the playstore, then safestrap again.
Now I can flash any of the 4.4.2 roms, none of the slowbooting, stuttering lockscreen or battery issues seem to be present, and Phone INFO ★Samsung★ has my baseband and bootloader as NG3.
All credit goes to muniz_ri, these are all his tools! I just stumbled across this method and thought others might benefit.
Click to expand...
Click to collapse
hegel22 said:
Hi,
do you do step 2 & 3 at the same time?
which field in Odin do you put the .tar file?
Thanks,
h
Click to expand...
Click to collapse
Do step 2 and 3 separate. Use the ap slot for both
dirtydodge said:
Do step 2 and 3 separate. Use the ap slot for both
Click to expand...
Click to collapse
After i update G900A_NCE_to_NG3_OTA from sd card while rebooting i get samsung account locked. Each time i enter the correct samsung account and password it displays processing failed. What should i do??? please help
Praveenshrestha1991 said:
After i update G900A_NCE_to_NG3_OTA from sd card while rebooting i get samsung account locked. Each time i enter the correct samsung account and password it displays processing failed. What should i do??? please help
Click to expand...
Click to collapse
I'm not sure. Sounds like the reactivation was locked before you downgraded. I'm not sure how to fix that.
Well, I tried flashing CWM on my T mobile Note 4, and it never worked. I used Odin, and while it said it worked, I still get stock recovery. HOWEVER, when I check for OTAs, my phone says it has been modified and I need to use Kies. I'm on stock firmware and haven't even rooted, so wold it be posible, much less safe, to update via Kies when lollipop rolls out? I haven't deleted any stock apps, and as previously stated am on stock firmware and recovery and am
not rooted.
I'm not that familiar with Kies, but for sure you will be able to update by Odin flashing the Lollipop firmware once it gets posted. Your CWM flashing may have worked but then the recovery got overwritten at boot by the stock ROM. But unfortunately that would trip your Knox flag and give you 'modified' status. If you try flashing CWM again, uncheck auto reboot, and then try booting straight into recovery.
Free T-Shirts said:
Well, I tried flashing CWM on my T mobile Note 4, and it never worked. I used Odin, and while it said it worked, I still get stock recovery. HOWEVER, when I check for OTAs, my phone says it has been modified and I need to use Kies. I'm on stock firmware and haven't even rooted, so wold it be posible, much less safe, to update via Kies when lollipop rolls out? I haven't deleted any stock apps, and as previously stated am on stock firmware and recovery and am
not rooted.
Click to expand...
Click to collapse
cwm works on the note 4?
Dang ive been out of the loop
Free T-Shirts said:
Well, I tried flashing CWM on my T mobile Note 4, and it never worked. I used Odin, and while it said it worked, I still get stock recovery. HOWEVER, when I check for OTAs, my phone says it has been modified and I need to use Kies. I'm on stock firmware and haven't even rooted, so wold it be posible, much less safe, to update via Kies when lollipop rolls out? I haven't deleted any stock apps, and as previously stated am on stock firmware and recovery and am
not rooted.
Click to expand...
Click to collapse
questions:
1.) How did you flash CWM without root? If you attempted this with ODIN you tripped KNOX and therfore voided the warranty and the abilitity to get an OTA.
2.) If you already have ODIN installed and know how to flash with it why bother with Kies and/or OTA's? You can use ODIN to flash the update as soon as it is posted only. With this dev community it shouldn't take too long.
Also if you are looking to use a custom recovery you should work with TWRP. Technically CWM and Philztouch are no longer being support. Finally if you already tripped KNOX by trying to flash custom recovery, why not just root the thing now. There really isn't much of a different now.
Sent from my SM-T900 using XDA Free mobile app
This is how you root:
http://forum.xda-developers.com/showthread.php?t=2903733
If you want an update later you can always odin to stock + factory reset.
PLease help,
i tried to do an update to AT&T sm g900a . my fw was 4.4.2 ng3. and i tired to flash nd3 and tried to flash oc1. but my phone stuck wit open padlock. then i flash stock partitions on oc4. then it could not on the phone.(i belive it automaticaly select re-partitions). then it only turn on upto samsumng log and stuck there. after 5 sec it reboot again.
i tried a stock rom flash with odin 3files Ap, cp & CSC. but it is not recovering. then i think i do erase the nand erase all.
i have also .pit file for SM g900A 16gb, and also tried to flash the pit file by checking re-partitions in odin3.
nothing work out. then i tried to flash single ap file but it is failed.
kindly give some advise,
Jstn Antony said:
PLease help,
i tried to do an update to AT&T sm g900a . my fw was 4.4.2 ng3. and i tired to flash nd3 and tried to flash oc1. but my phone stuck wit open padlock. then i flash stock partitions on oc4. then it could not on the phone.(i belive it automaticaly select re-partitions). then it only turn on upto samsumng log and stuck there. after 5 sec it reboot again.
i tried a stock rom flash with odin 3files Ap, cp & CSC. but it is not recovering. then i think i do erase the nand erase all.
i have also .pit file for SM g900A 16gb, and also tried to flash the pit file by checking re-partitions in odin3.
nothing work out. then i tried to flash single ap file but it is failed.
kindly give some advise,
Click to expand...
Click to collapse
Try this,
http://forum.xda-developers.com/showthread.php?p=60012961
Waiting4MyAndroid said:
Try this,
http://forum.xda-developers.com/showthread.php?p=60012961
Click to expand...
Click to collapse
hi thank you, i tried this but now it is stuck on galaxy s5 logo with unlocked padlock. and there no reboot , just stay the phone on. no way to switch off except take out the battery.
please advise
Mine was like this and I also tried the above to no avail....the only way I found around it was to take it in to ATT store and have them "re-flash the Lolipop update" Wiped my phone but it works, now I just have to wait (patiently) for root exploit for the OTA 5.0.
twocrows said:
Mine was like this and I also tried the above to no avail....the only way I found around it was to take it in to ATT store and have them "re-flash the Lolipop update" Wiped my phone but it works, now I just have to wait (patiently) for root exploit for the OTA 5.0.
Click to expand...
Click to collapse
thank you, any one have better idea other than this. can we do complete reflash the os on samsung sm g900a At&t?
please help
Jstn Antony said:
thank you, any one have better idea other than this. can we do complete reflash the os on samsung sm g900a At&t?
please help
Click to expand...
Click to collapse
i flashed full stock 4.4.2 nce but still it is stuck in the sammsung boot logo...
Jstn Antony said:
i flashed full stock 4.4.2 nce but still it is stuck in the sammsung boot logo...
Click to expand...
Click to collapse
Try factory reset from recovery.
Jstn Antony said:
i flashed full stock 4.4.2 nce but still it is stuck in the sammsung boot logo...
Click to expand...
Click to collapse
Which file did you flash
archie87 said:
Which file did you flash
Click to expand...
Click to collapse
i flashed 4.4.2 nce stock rom, by odin containing 4 files BL,AP, CP, CSC (BL didn't used)
i believed that it happened to me like stuck on Samsung logo at first time, when i flashed oc4 stock partitions to my 4.4.2 ng3 .
after that it never rebooted.
when i try to from sdcard it will say e/footer is wrong, something like that.
but somebody told me that i can adb and what is that ? it will help me or not?
kindly advise....
Jstn Antony said:
i flashed 4.4.2 nce stock rom, by odin containing 4 files BL,AP, CP, CSC (BL didn't used)
i believed that it happened to me like stuck on Samsung logo at first time, when i flashed oc4 stock partitions to my 4.4.2 ng3 .
after that it never rebooted.
when i try to from sdcard it will say e/footer is wrong, something like that.
but somebody told me that i can adb and what is that ? it will help me or not?
kindly advise....
Click to expand...
Click to collapse
Flash this file instead and you should be back to normal.
http://forum.xda-developers.com/att...w-to-unbrick-flash-to-stocknce-g900a-t3077652
archie87 said:
Flash this file instead and you should be back to normal.
http://forum.xda-developers.com/att...w-to-unbrick-flash-to-stocknce-g900a-t3077652
Click to expand...
Click to collapse
thank you i am trying to download this file. but i could not success due to bad internet. before i tried almost same single fie in the ap folder of odin. but it was not success.
but iwil try this and give you the updates...
Hi Archie
Big thank you, its great working Back to normal...
archie87 said:
Flash this file instead and you should be back to normal.
http://forum.xda-developers.com/att...w-to-unbrick-flash-to-stocknce-g900a-t3077652
Click to expand...
Click to collapse
Sweet! I was in the same boat and saw the post about getting stuck on the Samsung screen. This solution worked perfectly!
Thanks!
Okay so I first rooted my 4.4.2 at&t g900a s5 with towelroot successfully. I then flashed a lollipop firmware with flashify directly from my phone and that firmware came with root. I didnt like lollipop so I flashed my orginal firmware (4.4.2) through odin and ended up sort of bricking my s5. When I turn it on, it goes in boot and makes the screen black and has a blue LED on top that stays on forever. I fixed the problem with this website:
http://www.galaxys5update.com/fix-black-screen-with-pulsating-blue-led-on-galaxy-s5-g900a/
I followed the steps and flashed the partition one first and got to the boot screen of the s5 and it had the lock symbol and said "custom" and paused there forever. I tried the modem one after it, but then the EXACT same thing happened with the partition one. All I want is to go back to stock or to lollipop or whatever, just a working phone. I tried factory resetting and wiping cache but nothing worked. PLEASE HELP ASAP
Hadi12317 said:
Okay so I first rooted my 4.4.2 at&t g900a s5 with towelroot successfully. I then flashed a lollipop firmware with flashify directly from my phone and that firmware came with root. I didnt like lollipop so I flashed my orginal firmware (4.4.2) through odin and ended up sort of bricking my s5. When I turn it on, it goes in boot and makes the screen black and has a blue LED on top that stays on forever. I fixed the problem with this website:
http://www.galaxys5update.com/fix-black-screen-with-pulsating-blue-led-on-galaxy-s5-g900a/
I followed the steps and flashed the partition one first and got to the boot screen of the s5 and it had the lock symbol and said "custom" and paused there forever. I tried the modem one after it, but then the EXACT same thing happened with the partition one. All I want is to go back to stock or to lollipop or whatever, just a working phone. I tried factory resetting and wiping cache but nothing worked. PLEASE HELP ASAP
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=3076803
Go to the OP and scroll to the notes section on post #1. In step 5 it has the NCE downgrade firmware. As long as you didn't take the OTA, the downgrade firmware will fix you. Flash it with odin 3.09 in the AP slot.
dirtydodge said:
http://forum.xda-developers.com/showthread.php?t=3076803
Go to the OP and scroll to the notes section on post #1. In step 5 it has the NCE downgrade firmware. As long as you didn't take the OTA, the downgrade firmware will fix you. Flash it with odin 3.09 in the AP slot.
Click to expand...
Click to collapse
I was having the same problem that OP had and your solution just saved me! Thank you so much!!! :good:
Hi everyone i desperately need some help, i had a rooted note 4 gave it to my cousin in greece, he just came back and i told him i would update it, i downloaded tekx"s rom and installed i did a full wipe as usual, after it installed the phone kept on rebooting over and over again, so i thought maybe i had to update the firmware, i tried doing that but i keep getting a fail message i cant update anything. so i rerooted the phone tried updating the firmware again and still getting a fail message. so now i dont have anything on the phone i am only able to go into recovery or down load mode, cant go into any type of settings on the phone incase i forgot to unlock something in there. i've looked everywhere on the net and cant find any type of solution, can someone help me out please? Thank you
panitsos said:
Hi everyone i desperately need some help, i had a rooted note 4 gave it to my cousin in greece, he just came back and i told him i would update it, i downloaded tekx"s rom and installed i did a full wipe as usual, after it installed the phone kept on rebooting over and over again, so i thought maybe i had to update the firmware, i tried doing that but i keep getting a fail message i cant update anything. so i rerooted the phone tried updating the firmware again and still getting a fail message. so now i dont have anything on the phone i am only able to go into recovery or down load mode, cant go into any type of settings on the phone incase i forgot to unlock something in there. i've looked everywhere on the net and cant find any type of solution, can someone help me out please? Thank you
Click to expand...
Click to collapse
Flash latest stock firmware in odin .
Once odin shows PASS go to stock recovery and do factory reset and wait 15 minutes to boot.
Do you have N910T tmobile note 4 ?
Link below for n910t latest firmware.
Extract the file and flash using odin choose AP
https://www.androidfilehost.com/?fid=385035244224408290
Trex888 said:
Flash latest stock firmware in odin .
Once odin shows PASS go to stock recovery and do factory reset and wait 15 minutes to boot.
Do you have N910T tmobile note 4 ?
Link below for n910t latest firmware.
Extract the file and flash using odin choose AP
https://www.androidfilehost.com/?fid=385035244224408290
Click to expand...
Click to collapse
i tried the cog2 the dok firmware nothing it fails all the time. if i try flashing this newer firmware and it works by some chance then i'm worried i wont be able to get a rom to work because from what i've seen most roms are cog2 or doc 6
panitsos said:
i tried the cog2 the dok firmware nothing it fails all the time. if i try flashing this newer firmware and it works by some chance then i'm worried i wont be able to get a rom to work because from what i've seen most roms are cog2 or doc 6
Click to expand...
Click to collapse
yes i have a tmboile note 4