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[Solved] when bootloader need to update

Hi,
i have a galaxy note 3 n9005 , when i bought this phone,my android was 4.3, after i update my phone via odin (without select bootloader update option in odin) to android kitkat 4.4.2 poland NB3 , and now i flash my phone to ND3 holand via odin and without select bootloader update...
i use odin 3.09 and official roms.
my knox is 0x0.
now, i have a question.
when i need to select bootloader update in odin?
Android OS and android system battery usage is too high ( about 25% android system and about 18% android OS).. is this mentioned to bootloader update?

When there's a huge update which cause rom not boot up coz u never update the bootloader.
Hehehe. Basically when u jump over from different version example 4.3 to 4.4, yes u need update bootloader.
As long as ur rom can bootup shld be no problem.
But if u update from ota, normally the bootloader will be flashed together, as samsung as much as possible wants all to apply new patch on the bootloader.
The android os and system usage is high, due to all crap and bloatware.
But, with this on top, battery usage still acceprable.
U can remove or disable all that bloatware. That's what I do.
Sent from somewhere under the sky, at the corner of this rounded earth.

antique_sonic said:
When there's a huge update which cause rom not boot up coz u never update the bootloader.
Hehehe. Basically when u jump over from different version example 4.3 to 4.4, yes u need update bootloader.
As long as ur rom can bootup shld be no problem.
But if u update from ota, normally the bootloader will be flashed together, as samsung as much as possible wants all to apply new patch on the bootloader.
The android os and system usage is high, due to all crap and bloatware.
But, with this on top, battery usage still acceprable.
U can remove or disable all that bloatware. That's what I do.
Sent from somewhere under the sky, at the corner of this rounded earth.
Click to expand...
Click to collapse
yes i download roms from samsung-updates.com and update via odin.
how can i find my bootloader updated or not?

If u want newest bootloader, since u r on nd3, and never choose to update bootloader, means u r still on the old bootloader.
If u still want to update the bootloader, u can go to alexndr rom, find the 1st post, there's a separate file for the bootloader itself.
Download and flash it through odin, at pda/ap, don't change any option, connect phone in download mode, click start.
It will finish in seconds.
Sent from somewhere under the sky, at the corner of this rounded earth.

persiansoftware said:
Hi,
i have a galaxy note 3 n9005 , when i bought this phone,my android was 4.3, after i update my phone via odin (without select bootloader update option in odin) to android kitkat 4.4.2 poland NB3 , and now i flash my phone to ND3 holand via odin and without select bootloader update...
i use odin 3.09 and official roms.
my knox is 0x0.
now, i have a question.
when i need to select bootloader update in odin?
Android OS and android system battery usage is too high ( about 25% android system and about 18% android OS).. is this mentioned to bootloader update?
Click to expand...
Click to collapse
You don't have to select the "update bootloader" option in odin, it's useless. When you flash a stock FW, BL will get updated regardless of whether you have that option chosen or not.
When I upgraded to kitkat I flashed just the BL and didn't select that option and bootloader was upgraded without any issues. I helped 5 or 6 others update to KK(some flashed just the BL and others the full FW) and they didn't select that option either and the BL was updated..
antique_sonic said:
If u want newest bootloader, since u r on nd3, and never choose to update bootloader, means u r still on the old bootloader.
If u still want to update the bootloader, u can go to alexndr rom, find the 1st post, there's a separate file for the bootloader itself.
Download and flash it through odin, at pda/ap, don't change any option, connect phone in download mode, click start.
It will finish in seconds.
Sent from somewhere under the sky, at the corner of this rounded earth.
Click to expand...
Click to collapse

Khizar said:
You don't have to select the "update bootloader" option in odin, it's useless. When you flash a stock FW, BL will get updated regardless of whether you have that option chosen or not.
When I upgraded to kitkat I flashed just the BL and didn't select that option and bootloader was upgraded without any issues. I helped 5 or 6 others update to KK(some flashed just the BL and others the full FW) and they didn't select that option either and the BL was updated..
Click to expand...
Click to collapse
how can i know the bootloader is update or not?

persiansoftware said:
how can i know the bootloader is updated or not?
Click to expand...
Click to collapse
Use this app..
https://play.google.com/store/apps/...tm_medium=organic&utm_term=phone+info+samsung
Sent From My SM-N9005 To All You Wonder Nobodies!!

Khizar said:
Use this app..
https://play.google.com/store/apps/...tm_medium=organic&utm_term=phone+info+samsung
Sent From My SM-N9005 To All You Wonder Nobodies!!
Click to expand...
Click to collapse
Thanks for your help ...
i download and install this application,my firmware info is :
bootloader version: N9005XXUEND3
baseband version: N9005XXUENC2
pda version: N9005XXUEND3
csc version: N9005PHNEND1
Best regards

[Q] Downgrade to older stock ROM N9005?

Hey all!
Is it possible to downgrade from a newer (NE3) firmware to an older (ND3) through Odin or it will brick my phone because of the bootloader?
The only things I know are that 1) Downgrade from 4.4.2 to 4.3 is not possible 2) It's possibile to install a custom older rom on new bootloader and vice versa BUT I don't know if it's possible with stock roms with Odin.
I looked for a solution but nothing found and no one answered me so I opened this thread to find out a solution.
Thanks in advance.

UP still interested because NE4 + custom kernel gives problems that others doesn't have
Sent from my SM-N9005 using XDA Premium 4 mobile app

Dan
I also wanted to do dawngrade because the because the 4.4.2 is **** battery does not hold as it should as was holding before the update

kylothow said:
Hey all!
Is it possible to downgrade from a newer (NE3) firmware to an older (ND3) through Odin or it will brick my phone because of the bootloader?
The only things I know are that 1) Downgrade from 4.4.2 to 4.3 is not possible 2) It's possibile to install a custom older rom on new bootloader and vice versa BUT I don't know if it's possible with stock roms with Odin.
I looked for a solution but nothing found and no one answered me so I opened this thread to find out a solution.
Thanks in advance.
Click to expand...
Click to collapse
I never actually tried going back to an older version but I really don't see why you shouldn't. As long as it's KitKat 4.4.2 just try it should work. I downgraded my Modem and haven't had any issue.
With the Bootloader worry...did you even change the bootloader? As well as the Modem you have to do that separate to the Rom, as flashing a Rom doesn't touch Modem an Bootloader!!! If you don't know how to do that please just leave it alone though unless you read, read, read a lot on how to do that.

4aces said:
I never actually tried going back to an older version but I really don't see why you shouldn't. As long as it's KitKat 4.4.2 just try it should work. I downgraded my Modem and haven't had any issue.
With the Bootloader worry...did you even change the bootloader? As well as the Modem you have to do that separate to the Rom, as flashing a Rom doesn't touch Modem an Bootloader!!! If you don't know how to do that please just leave it alone though unless you read, read, read a lot on how to do that.
Click to expand...
Click to collapse
Thanks for the reply, every time I install a new rom I make sure to update the bootloader and modem too, and from what I can read from the Synapse app I have the NE3 modem and NE4 bootloader.
I'm asking how to go back to older roms because going from 4.4.2 to 4.3 updating the bootloader with Odin you obtain only a fancy paper weight, and I didn't know if going from newer to older 4.4.2 bootloader it was the same story.
Sent from my SM-N9005 using XDA Premium 4 mobile app

kylothow said:
Thanks for the reply, every time I install a new rom I make sure to update the bootloader and modem too, and from what I can read from the Synapse app I have the NE3 modem and NE4 bootloader.
I'm asking how to go back to older roms because going from 4.4.2 to 4.3 updating the bootloader with Odin you obtain only a fancy paper weight, and I didn't know if going from newer to older 4.4.2 bootloader it was the same story.
Sent from my SM-N9005 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I'm pretty sure there won't be an issue mate since I flash between custom roms almost daily which are most of the time different models. If you want to be 100% sure wait for someone to confirm as I'm rooted since I got the chance to do so.

Thanks to the developer Civato I read on his FlexKat thread he correctly downgraded his bootloader from NE6 to ND6 with Odin...
So problem solved, this is definitely possible.
Thank you everyone for your replies :good:

Downgrading bootloaders on the same version generally tends to work OK, mainly because on 4.3 Samsung patched the security flaw which stopped you going <MJ7
Kith Kitkat I never had any issues flipping back and forth.--- Until it's a BL upgrade with OS Number change (IE: 4.4.3 if it has new BL) then it shouldn't work.

hi. sorry,this is probably an old thread but I need some help,please and somehow,Google got me here. I want to downgrade (not really downgrade) my N9005 to 4.4.2.
I currently have a custom ROM(resurrection remix v5.6.9,in settings it says that I have android 6.0.1 marshmallow). Also,I have a custom recovery(TWRP). Well,I would like to install the KitKat stock ROM and really did a lot of research but I cannot find it anywhere :'( . Do you know any source? And also,can I flash it with mobile ODIN? When I opened Mobile Odin Pro it said that if I don't have the boot loader for the ROM I want to install then I will experience a soft brick. Isn't TWRP a good boot loader?
Also,does it matter what version of N9005 I own? mine is: XXUGBOJ1. Could I flash smth that is not for this ..base band is it called?...
pls help
I'm such a newbie and I don't wanna mess up

PainCutter said:
hi. sorry,this is probably an old thread but I need some help,please and somehow,Google got me here. I want to downgrade (not really downgrade) my N9005 to 4.4.2.
I currently have a custom ROM(resurrection remix v5.6.9,in settings it says that I have android 6.0.1 marshmallow). Also,I have a custom recovery(TWRP). Well,I would like to install the KitKat stock ROM and really did a lot of research but I cannot find it anywhere :'( . Do you know any source? And also,can I flash it with mobile ODIN? When I opened Mobile Odin Pro it said that if I don't have the boot loader for the ROM I want to install then I will experience a soft brick. Isn't TWRP a good boot loader?
Also,does it matter what version of N9005 I own? mine is: XXUGBOJ1. Could I flash smth that is not for this ..base band is it called?...
pls help
I'm such a newbie and I don't wanna mess up
Click to expand...
Click to collapse
Get a 4.4.2 fw and flash with windows odin. Not really familiar with mobile odin. Find fw for you country csc. Flashing other csc fw sometimes requires pit file so better get the 1 for your country or originally came with the phone.
Sent from my SM-N920C

Rosli59564 said:
Get a 4.4.2 fw and flash with windows odin. Not really familiar with mobile odin. Find fw for you country csc. Flashing other csc fw sometimes requires pit file so better get the 1 for your country or originally came with the phone.
Sent from my SM-N920C
Click to expand...
Click to collapse
I'd do that..my csc is for Romania. But I cannot find anywhere on the Internet the fw. And I searched alot

PainCutter said:
I'd do that..my csc is for Romania. But I cannot find anywhere on the Internet the fw. And I searched alot
Click to expand...
Click to collapse
Samsung updates.com.
I can see a few for Romania with CNX, ORO, COA, ROM, HAT csc.
But they very old. Probably not downloadable.
Sent from my SM-G925F

Anyway to Downgrade from 5.1.1 (COJ5) to 5.0.1 ?! N910C

can i downgrade from 5.1.1 N910CXXU2COJ5 to any 5.0.1 ?
If Yes , How can i do so please
Why i want to do so , i want to run MIUI :angel:

no one knows !

I'm having the same problem here. After the OTA update to COJ5, Odin always fail to flash any ROM before COJ5 (device display the message sw rev.check fail device 2 binary 1). Also, all the root methods that worked on COJ4 stopped working in this new version, always resulting in a infinite bootloop forcing me to reflash COJ5 in Odin. I even went to TWRP and completely wiped my phone (including system) but still coudn't install any previous version (installing the SuperSU through TWRP also results in infinite bootloop now). Did anyone find a solution for this yet? I'm guessing that this won't be a problem for just Galaxy Note 4....

Dolphin87 said:
can i downgrade from 5.1.1 N910CXXU2COJ5 to any 5.0.1 ?
If Yes , How can i do so please
Why i want to do so , i want to run MIUI :angel:
Click to expand...
Click to collapse
Step 1: Flash Bootloader 5.0.1 First
Step 2: Downgrade
link for bootloaders
http://forum.xda-developers.com/showpost.php?p=58867937&postcount=3
tell me if this works for you

kerbiii said:
Step 1: Flash Bootloader 5.0.1 First
Step 2: Downgrade
link for bootloaders
http://forum.xda-developers.com/showpost.php?p=58867937&postcount=3
tell me if this works for you
Click to expand...
Click to collapse
Do these exist for the 910U? I'm having the same problem. Thanks!

kerbiii said:
Step 1: Flash Bootloader 5.0.1 First
Step 2: Downgrade
link for bootloaders
http://forum.xda-developers.com/showpost.php?p=58867937&postcount=3
tell me if this works for you
Click to expand...
Click to collapse
Well, while [5.1.1 COJ4] can be downgraded to 5.0.1, [5.1.1 COJ5] can't. The problem may be exactly the bootloader that cannot be downgraded through ODIN. I don't believe that any common procedure will work for this downgrade. We will likely need a different approach.
I also read in some forum that while Odin won't work anymore, TWRP (or CWM) still will. So this leads to other two questions:
* Is there any place we can download stock roms in recovery format instead of ODIN's?
* If not, is there any way we can convert Stock Roms from ODIN's format to TWRP's?

amidsal said:
Well, while [5.1.1 COJ4] can be downgraded to 5.0.1, [5.1.1 COJ5] can't. The problem may be exactly the bootloader that cannot be downgraded through ODIN. I don't believe that any common procedure will work for this downgrade. We will likely need a different approach.
I also read in some forum that while Odin won't work anymore, TWRP (or CWM) still will. So this leads to other two questions:
* Is there any place we can download stock roms in recovery format instead of ODIN's?
* If not, is there any way we can convert Stock Roms from ODIN's format to TWRP's?
Click to expand...
Click to collapse
if that is the case get a backup from your friend or someone with the same model like you and make sure they have a kitkat or 5.0.1 version

I have the same problem, after updade coj5 I can not downgrade to kitkat 4.4.4

@amidsal and @kirbiii, did you try this and get it to work? If so, how did you do it?

vince.lupe said:
@amidsal and @kirbiii, did you try this and get it to work? If so, how did you do it?
Click to expand...
Click to collapse
Sadly no. I'm still believe that the best (if not the only way) right now is through JTAG.
Excluding direct access to the internal SD Card, the only way to overwrite the protected memory in the device is through the bootloader, which is protected itself.

I did managed to downgrade my note 4 N910U from 5.1.1 to 5.0.1.

Ryan1469 said:
I did managed to downgrade my note 4 N910U from 5.1.1 to 5.0.1.
Click to expand...
Click to collapse
how I have 910C ,maybe we can use your method

?
igorir said:
I have the same problem, after updade coj5 I can not downgrade to kitkat 4.4.4
Click to expand...
Click to collapse
I managed to run 4.4.4 x-note rom on n910c with ultimate kernel v9 I have coj5 bootloader

Any details? How did you do it? It looks like you are the only one who succeeded.
Thx
Tom

Aze0077 said:
I managed to run 4.4.4 x-note rom on n910c with ultimate kernel v9 I have coj5 bootloader
Click to expand...
Click to collapse
bro can u please upload ultimate kernel v9?i have searched almost everywhere but i cannot find

TWRP Recovery help please

So Last night I decided to Flash the 5.1.1 update to my Note 4. I made a full nandroid backup via TWRP
before I updated. Well, I updated successfully, but soon found the method I was planning to use to root had been
withdrawn and could no longer be used.
So I thought I would just run TWRP and restore the back up I made and go back to 5.0.1. Well the restore seemed to work, however now I'm stuck in a
bootloop. I just get the Note Logo and then a reboot. I tried flashing SuperSU via TWRP (as my previous setup was rooted) However
that hasn't helped.
Anyone got any ideas?

did you flash the latest COJ5 build of 5.1.1? if so then there is no way to downgrade as the new bootloader in COJ5 build is locked.

dork997 said:
did you flash the latest COJ5 build of 5.1.1? if so then there is no way to downgrade as the new bootloader in COJ5 build is locked.
Click to expand...
Click to collapse
Yeah, it was that build. Damn.
(Man, That gives me the sh!ts. I searched for the difference between COI1 and COJ5 and could find anything.. Grrrrrr.)
Was the COI1 build locked as well?
EDIT: it appears not.
Suppose flashing the COI1 over the COJ5 will do nothing?

BrikHaus said:
Yeah, it was that build. Damn.
(Man, That gives me the sh!ts. I searched for the difference between COI1 and COJ5 and could find anything.. Grrrrrr.)
Was the COI1 build locked as well?
EDIT: it appears not.
Suppose flashing the COI1 over the COJ5 will do nothing?
Click to expand...
Click to collapse
Well i dont know about COl1...all i know is that once you update to COJ5 there is no way going back to any previous backup or firmware...not even via ODIN as it has locked the bootloader. You are not alone many people have complained about this here in the previous few days but there is no solution for this. Just flash stock COJ5 via Odin and you will be able to get your phone to working.

Yeah I did that this morning. Back on 5.1.1.
Wouldn't mind so much if there was root / xposed.
COI1 is 5.1.1 but apparently not locked Bootloader. So I assume its too late for me. Mine is now locked.
But SO ANGRY! Saw the two updates and tried to Google the difference between the two, and couldn't find anything so went
with COJ5 as that was at the top. Kicking myself for my stupidity, and Cursing Samsung for locking this.
Thanks for your comments. Help has been much appreciated.

I can not flash over recovery when I try to flash the recovery will start again and again, please help

I was able to flash the latest TWRP without any issue, so I'm not sure how to help you..
I guess my biggest concern is whether I will be able to Root on 5.1.1 with this new crap bootloader.
I'm Ok with running Stock.. But Root is a deal breaker for me. Anyone know if this is being worked on?

Downgrade from Oreo to Nougat? [SM-G950F]

So yesterday I updated from Nougat (not rooted) to Oreo. After I updated I had some issues with my SIM. Basically most of the time I get "Out of service/Not registered in the Network". The SIM is working fine in other Phones. Already tried a reformat (with Stock Recovery) did not help.
So can I just use Odin v3.12 and the S8 Nougat files and flash them?
Will it brick If I do it?
The Oreo Firmware (and my phone) has no carrier. (DBT, Germany)
Same goes for the Nougat Firmware.
Thanks
Phone Info:
- SM-G950F
- Exynos variant
- DBT (unbranded)

RamTheSecond said:
So yesterday I updated from Nougat (not rooted) to Oreo. After I updated I had some issues with my SIM. Basically most of the time I get "Out of service/Not registered in the Network". The SIM is working fine in other Phones. Already tried a reformat (with Stock Recovery) did not help.
So can I just use Odin v3.12 and the S8 Nougat files and flash them?
Will it brick If I do it?
The Oreo Firmware (and my phone) has no carrier. (DBT, Germany)
Same goes for the Nougat Firmware.
Thanks
Phone Info:
- SM-G950F
- Exynos variant
- DBT (unbranded)
Click to expand...
Click to collapse
Yes you can use Odin to Flash back to N

StackOverflow13 said:
Yes you can use Odin to Flash back to N
Click to expand...
Click to collapse
Hi, in this case the Knox is altered? I was reading something about the new Oreo bootloader that would not allow the downgrade. Thank you and sorry for my English!

_llma said:
Hi, in this case the Knox is altered? I was reading something about the new Oreo bootloader that would not allow the downgrade. Thank you and sorry for my English!
Click to expand...
Click to collapse
No the 950f is not effected it will not trip knox if you downgrade via odin

StackOverflow13 said:
No the 950f is not effected it will not trip knox if you downgrade via odin
Click to expand...
Click to collapse
Thank you so much !!

i want to downgrade oreo to nougat, are you sure this will not trip knox
thank you

Good day.
I have downgraded and knox is still 0x0.

Hansoliv said:
Good day.
I have downgraded and knox is still 0x0.
Click to expand...
Click to collapse
Was the phone reset or data was retained?

Bogeyof said:
Was the phone reset or data was retained?
Click to expand...
Click to collapse
Good day.
I reseted the my data.

I've been having the same issue with my service I updated to Oreo via stock recovery with update zip in SD card...my question is, couldn't I just flash the downgrade through stock recovery as well? I don't have access to Odin of a laptop

can anyone link me a flashable italian firmware for s8 nougat? thanks

myabc said:
can anyone link me a flashable italian firmware for s8 nougat? thanks
Click to expand...
Click to collapse
SM-G950F: https://www.sammobile.com/firmwares/galaxy-s8/SM-G950F/ITV/download/G950FXXU1AQK7/199473/

Downloaded. Thanks many thanks many

Please i try to flash with odin the 4 files on already oreo.... The odin software start to flash and in 2 seconds shows done and restart, but doesnt do anything. Can anyone help me? Thanks

Mine fails instantly to , just come back to samsung from oneplus , and need to flash N , tried older odin but still fails.

Can I downgrade to nougat from oreo on samsung note 8 SM-N950U1 ?

Are the firmwares for G955F and G955FD the same?
My friend has the FD version with G955FXXU1CRB7 - CSC ILO (ISRAEL), but I can't find G955FXXU1AQK7 for the FD version for CSC ILO.
Can I use the firmware for the F variant with Odin?
He is having terrible battery issues with Oreo, wiped data using stock recovery but it won't help.

Downgrade from CRAP (8.0) to AQL5 (7.0) and now I have a DRK error and it automatically starts the recovery, some help?

You can't downgrade via odin. You can only flash the same firmware or higher.
Sent from my SM-G950F using XDA-Developers Legacy app

Can you downgrade SM G950U from Oreo nougat?