Is CPG2 Marshmallow not unlockable or downgradeable for root? - Verizon Galaxy Note 4 Q&A, Help & Troubleshooting

Searched from 10pm to 7am, I give up. Refurbished phone came with the new CPG2, am I screwed?
The stock download mode doesn't seem to play with Odin, is there any way to downgrade to any other baseband for rooting, or even better, unlock this accursed bootloader?
I've seen hints, but no posts or threads with any definitive answers. Help me, Obi Wan, I'm so tired...

gingerbate said:
Searched from 10pm to 7am, I give up. Refurbished phone came with the new CPG2, am I screwed?
The stock download mode doesn't seem to play with Odin, is there any way to downgrade to any other baseband for rooting, or even better, unlock this accursed bootloader?
I've seen hints, but no posts or threads with any definitive answers. Help me, Obi Wan, I'm so tired...
Click to expand...
Click to collapse
****I think we're screwed. I've been trying to downgrade to 5.1.1 from the latest 6.0.1 for the last few hours and it seems to have borked my phone pretty bad. Hopefully reflashing the current firmware will fix it.****
Cancel that, I apparently just flashed the wrong file and its now downgraded to 5.1.1
Just need to use Odin to flash a older firmware and you should be good to go

ajohn7211 said:
****I think we're screwed. I've been trying to downgrade to 5.1.1 from the latest 6.0.1 for the last few hours and it seems to have borked my phone pretty bad. Hopefully reflashing the current firmware will fix it.****
Cancel that, I apparently just flashed the wrong file and its now downgraded to 5.1.1
Just need to use Odin to flash a older firmware and you should be good to go
Click to expand...
Click to collapse
May I ask what files you used? I was on 5.1.1 rooted until this morning when I tried to get to 6.0.1. No matter what I tried to do, my phone would not root. Tried KingRoot and KingORoot a bunch of times, and root checker always said that root was not successful. Then I got into a boot loop, so I ran the Verison repair utility and now I'm on the latest and greatest 6.0.1.
Even after the repair utility ran, when I reboot my phone, it still says "Custom", with the unlocked padlock on the boot screen.
I'd like to get back to 5.1.1. with root again and I'm fine with not having 6.0.1.

usmaak said:
May I ask what files you used? I was on 5.1.1 rooted until this morning when I tried to get to 6.0.1. No matter what I tried to do, my phone would not root. Tried KingRoot and KingORoot a bunch of times, and root checker always said that root was not successful. Then I got into a boot loop, so I ran the Verison repair utility and now I'm on the latest and greatest 6.0.1.
Even after the repair utility ran, when I reboot my phone, it still says "Custom", with the unlocked padlock on the boot screen.
I'd like to get back to 5.1.1. with root again and I'm fine with not having 6.0.1.
Click to expand...
Click to collapse
I'm in a similar boat, where i bought a Verizon Note2 phone that had android 6.0.1 N910VVRU2CPG2 when I got it. Has any one found any way to root/unlock bootloader so we can put a custom ROM on it?

Related

[Q] My nexus 7 its crazy and getting error updating.

Hi, i have some kind of problem with my nexus 7 2013.. I already have lollipop 5.1.1 official on my tablet and have root and unlocked bootloader (root with king root, yes it works and is rooted.. And bootloader unlocked with boot unlocker.. I know you might think that this are not the best way of rooting or unloking the bootloader but it worked for me and im happy) and since yesterday the tablet keeps telling me to update via OTA the 5.1.1 update witch i already have..i press update to install it as normal, it reboot as normal too and when it shows me the parte where it suppose to be installing the update (you know, with the android with the chest open part) the only thing that says is "error" it doesn't install anything..i did this like 3 times now and every one of them says error.. The annoying part is that it keeps showing me the notification to update it..so any solutions? Thanks!
Sorry for bad english blah blah...
You can't take ota updates if you modify system files, you did that with root. Don't know why it's showing you 5.1.1 when you already have it.
Just flash the factory image with fastboot (probably no need to wipe, just flash boot.img and system.img and format cache).
That should fix the problem. It will also remove root. I'd recommend not using that king root **** but whatever. Probably better to just flash the su zip in twrp or use CF-Auto-Root.
When the next update comes remember you won't be able to take the ota. But that doesn't matter since google posts factory images and all you need to do is flash it with fastboot, then root again.
yosmokinman said:
YDon't know why it's showing you 5.1.1 when you already have it.
Click to expand...
Click to collapse
There's a new 5.1.1 = LMY48G
Original 5.1.1 is LMY47V
^Oh yeah, lol.
Still the rest of my post will get it installed for op.

Just need a bit of help getting going

So Ive searched around and I just can't find a definitive answer so here is what I got.
I understand that this here; is how you use marshmallow with the new bootloader unlock and root: http://forum.xda-developers.com/not...t/howto-bootloader-unlock-upgrade-to-t3398144
I also know that I have to do this exploit first to unlock the bootloader: http://forum.xda-developers.com/note-4-verizon/general/note-4-verizon-bootloader-unlock-t3358913
My issue is I ended up getting forced OTA 2 weeks ago. So my current question is, Do I have to roll back to lollipop? Is root/unlock even possible for me? If so, How do I do that since I haven't rolled back before. Its been a while since I've been into rooting/roms. Is there a link to doing it for marshmallow to lollipop? Also what about the firmware?
Current Stats:
Model: SM-N910V
Baseband: N910VVRU2CPD1
Android Version: 6.0.1
Build: MMB29M.N910VVRU2CPD1
Kernel Version: 3.10.40
I just need an answer since Ive been reading threads the last 2 hours. Its confusing since the titles of most are how to unlock bootloader THEN goto marshmallow. Thanks Guys!
I think I solved it myself. Looking like I'm effed with this bootloader. Since I don't think its rootable or unlockable.
ThatRoo said:
I think I solved it myself. Looking like I'm effed with this bootloader. Since I don't think its rootable or unlockable.
Click to expand...
Click to collapse
You can try to roll back to 5.1.1 by flashing the full firmware (thanks, hsbadr!) using ODIN. You can unlock the bootloader on this version.
The question is, will your phone let you. In another thread, the success rate appears to be something less than 100%. I don't know what the harm would be... if you can't do it, ODIN will likely fail. At any rate, the attempt is on you. I can't be responsible for what happens.
douger1957 said:
You can try to roll back to 5.1.1 by flashing the full firmware (thanks, hsbadr!) using ODIN. You can unlock the bootloader on this version.
The question is, will your phone let you. In another thread, the success rate appears to be something less than 100%. I don't know what the harm would be... if you can't do it, ODIN will likely fail. At any rate, the attempt is on you. I can't be responsible for what happens.
Click to expand...
Click to collapse
I did it just trying to get cyanogen to work with wifi and data/cellular to keep. However my phone is dev now and TWRP is installed.
ThatRoo said:
I did it just trying to get cyanogen to work with wifi and data/cellular to keep. However my phone is dev now and TWRP is installed.
Click to expand...
Click to collapse
Then you're good to go.
douger1957 said:
Then you're good to go.
Click to expand...
Click to collapse
Just frustrated right now trying to get Wifi to work. It looks like its suggested to try Flashing MM Stock, Reroot and Re-unlock bootloader here:
http://forum.xda-developers.com/not...t/howto-bootloader-unlock-upgrade-to-t3398144
Then use TWRP after all that.
ThatRoo said:
Just frustrated right now trying to get Wifi to work. It looks like its suggested to try Flashing MM Stock, Reroot and Re-unlock bootloader here:
http://forum.xda-developers.com/not...t/howto-bootloader-unlock-upgrade-to-t3398144
Then use TWRP after all that.
Click to expand...
Click to collapse
Just make sure you're paying attention to what you're flashing. There are only three roms in the verizon development section that are able to utilize the 6.01 bootloader and modem. JASMINE ROM, PAULPIZZ 6.01 Beta and Cm13. The other roms are ports based on 5.1.1 so you may need to stay on the previous setup until more roms are updated
Tip the OP usually states what works/does not work and updates when things are fixed . The information changes quickly so sometimes you may need to read the thread from the end back to the beginning to see if your issues have been addressed
It was actually super simple once I found the thread on how to go back to 5.1.1 then how to take that and go unlocked w/ marshmallow chain. Last thing to figure out is disabling OTA on Jasmin ROM

Help. I think I may have hard bricked!

OK, I think I made a major mistake. I was on CM13 and decided to go back to stock. I just flashed N910VVRU2CPD1_StockRestore.tar.md5 and went into TWRP and factory reset. Everything was fine for a day and when I rebooted one time I could not get back into TWRP. Like a moron, I decided to just do the OTA update since I wasnt too concerned about root and now I am up what appears to be poops creek without a paddle. When I boot my phone now I get a Custom binary blocked by Reactivation Lock. I get the same message when I go into recovery. I have download mode and am currently downloading the 4 gig N910V Root Files.zip and the N910VVRU2BPA1_N910VVZW2BPA1_N910VVRU2BPA1_HOME.tar.md5. Am I on the right track? How should I proceed? Thanks in advance for any help!
Got it, back on 5.1.1. Just trying to figure out how to prevent OTA now.
RaMcHiPTech said:
Got it, back on 5.1.1. Just trying to figure out how to prevent OTA now.
Click to expand...
Click to collapse
Do you want to get onto 6.0.1? If so, do the safe upgrade to MM. Reunlock I forget how the process works, if you have to unlock on 5.1.1 then flash then unlock on 6.0.1 again, though. After you do that, then I'm guessing you can use Debloater to halt updates.
RaMcHiPTech said:
Got it, back on 5.1.1. Just trying to figure out how to prevent OTA now.
Click to expand...
Click to collapse
Delete or rename system/app/SDM.apk and securitylogagent.apk

Can you go from retail stock 6.0 with locked bootloader to 5.1.1?

I'm... asking for a friend....
But seriously, I tried following the instructions on the "[Guide] Step by Step from Stock N910V 6.0.1 to hsbadr's CyanogenMod 13.0 " thread, intending to bypass them when I got to the point of being able to jump over to the newer roms, and all I got was a boot loop when I tried flashing in 5.1.1. Is it because I'm on a retail 910v or was it a user error kinda thing? I tried multiple times and couldn't get it to boot after the flash, ended up flashing 6.0.1 back just to get my phone back.
I'm also ready to free the bootloader and root this thing. It seems emotion OS is the most popular and up to date now, correct?
I have the CPL1 update from Verizon( Dec patch). I know there are a bunch of threads with how tos, but it's unclear how outdated they are and whether it works with these latest versions. If someone can confirm the best way to go from cp1 to emotion.. Let me know.
Also.. I saw a while ago a guide on how to go to developer edition. Why isn't that front and center anymore? Isn't Dev edition completely unlocked... Why wouldn't I want to convert to dev edition before dealing with any rom changes? If someone can give some clarification I'd appreciate it.
Great news, I went for the plunge and succeeded. Confirmed -> stock and latest version software as of Jan 20 2017 (CPL1) can be downgraded to 5.1.1, rooted, TWRPed, and blah blah. I used the same guide you mentioned at top (hsbadr's CM13 guide), except i stopped at step 52 and continued to install emotion OS instead. Highly recommend it.
I'm on EmotionOS now. Wow, it was really worth it. So smooth compared to touchwiz 6.0.1. Haven't found a bug yet, but even if i do, i won't care.
I'm not sure what you mean "when i got to the point of installing newer roms". If you got to that point, why were you trying to flash 5.1.1 again?
How did you root it? I flashed mine back to 5.1.1, but I'm not having any luck rooting.
Michael7332 said:
How did you root it? I flashed mine back to 5.1.1, but I'm not having any luck rooting.
Click to expand...
Click to collapse
Follow the guide. You are going to go through a complicated process using the king root apk. I think the guide makes you use king root 3 times total to accomplish various parts of the process. King root loads up and spins for a few minutes, eventually succeeds, then you gotta punch in some things to command line using adb. I believe this is rooting your phone a few times.
Eventually you end up with twrp bootloader and jasmine Rom and everything just sticks.
So far.. The only annoying thing with emotion is that I lost volte and video calling. Maybe they'll bring it in one day.

Note 4 - Android 6.0.1 - Downgrade? Or Fix? -- Neubie here

Hi, I've got this one Note 4 that's had loads of trouble presumably since the last security update.
Baseband Version: N910AUCS2EQD1
Android: 6.0.1
Have seen the instructions and all as to how to go about downgrading BUT one site I came across with the original stock firmware downloads outright state how:
""DO not ever try to downgrade from any newest Android 6.0.1 Marshmallow updates back to an older 6.0.1 build version""
'and so I'm lost. Should trying to then reinstall the same Baseband version atop what's already there a good first alternative? ...that is, just in case it was never upgraded properly in the first place? Or is that not even possible?
Is trying to downgrade at all a futile pursuit?
Would truly appreciate any suggestions, help, direction...heck, anything! Thanks in advance.
I downgraded from 6.0.1 epk5 to 5.1.1 with no problem.
Not sure about qd1.
As long as you have the odin firmware, I see no problem.
Can i downgrade note 4 n910a from marshmallow to lollilop,please help me i am in great trouble because marsmallow update is very bad with a lot of reboot issue ,battery drain.
Once you are on QD1 you will not be able to go back to anything lower than that firmware. The bootloader is now at the latest version and has blown one of those imaginary "e-fuses" so that you can not go back in time to any other vulnerable OS. I just tried today to go from EQD1 to EPK5 and It would not flash and would fail every time whilst using the latest Odin. So good luck on finding anything on getting you back to another firmware version but at this time I do not believe there is anything that will move you back to the firmware you want. If you do happen to find something or make your own exploit do tell @sanaullahkhan371 If you are on QD1 you are not going to be able to downgrade if you are on PK5 you can try the Odin downgrade method that will5 presumably used but if you are not in this firmware use case you are SOL.
will5 said:
I downgraded from 6.0.1 epk5 to 5.1.1 with no problem.
Not sure about qd1.
As long as you have the odin firmware, I see no problem.
Click to expand...
Click to collapse
Hi,
Can you please let me know how did you downgrade? Is it straight away flash to 5.1.1 or did you follow any steps?
I am also planning to downgrade. Anyways, I stopped using Note 4 after update to 6.0.1 as it was switching off every now and then due to update. Might as well make this phone usable to take photos and as a video player for my kid
Thanks
roxster said:
Hi,
Can you please let me know how did you downgrade? Is it straight away flash to 5.1.1 or did you follow any steps?
I am also planning to downgrade. Anyways, I stopped using Note 4 after update to 6.0.1 as it was switching off every now and then due to update. Might as well make this phone usable to take photos and as a video player for my kid
Thanks
Click to expand...
Click to collapse
I just odin to this firmware N910AUCU2DOI2-5.1.1 It s available somewhere on this forum.
Read how to odin if you never used it. In this case you need to unzip the file and load AP, BL, CP and CSC files on odin and flash.
Was running 6.0.1 epk5 previously.
will5 said:
I just odin to this firmware N910AUCU2DOI2-5.1.1 It s available somewhere on this forum.
Read how to odin if you never used it. In this case you need to unzip the file and load AP, BL, CP and CSC files on odin and flash.
Was running 6.0.1 epk5 previously.
Click to expand...
Click to collapse
Thanks a lot buddy! :good:
My note 4 was also running on 6.0.1 EPK5. Found the 5.1.1 firmware and followed your instructions to downgrade. My phone came back to life and is usable now.:victory:
No more switching off abruptly! I wont update anymore since all the apps which I use are working fine with current version of Android.
braindead444 said:
Once you are on QD1 you will not be able to go back to anything lower than that firmware. The bootloader is now at the latest version and has blown one of those imaginary "e-fuses" so that you can not go back in time to any other vulnerable OS. I just tried today to go from EQD1 to EPK5 and It would not flash and would fail every time whilst using the latest Odin.
Click to expand...
Click to collapse
Were you ever able to flash back to an older version from QD1? Others have said that the bootloader was not incremented in QD1.
spocko said:
Were you ever able to flash back to an older version from QD1? Others have said that the bootloader was not incremented in QD1.
Click to expand...
Click to collapse
Were you able to downgrade from EQD1 to 5.1.1? I am on EQH1 and I am not able to downgrade
somani09 said:
Were you able to downgrade from EQD1 to 5.1.1? I am on EQH1 and I am not able to downgrade
Click to expand...
Click to collapse
I'm also on EQH1. I have never tried to downgrade. I was just curious if it was possible, in case a root method was discovered that only worked on older versions. But I've just learned to live without root. EQH1 works fine for me.
I had the infamous freeze/reboot/shutdown issue with 6.0.1 and I wasn't sure if that was the issue but I downgraded to 5.1 and have fewer issues now. The phone runs just fine, except it does not reboot. You have to do a soft reset every time. But with the Wakelock app, at least it runs.
roxster said:
Thanks a lot buddy! :good:
My note 4 was also running on 6.0.1 EPK5. Found the 5.1.1 firmware and followed your instructions to downgrade. My phone came back to life and is usable now.:victory:
No more switching off abruptly! I wont update anymore since all the apps which I use are working fine with current version of Android.
Click to expand...
Click to collapse
Hi can i ask if u still have that firmware file

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