Develop Bugs

[Q] Downgrade from CM9 to ICS or HC?

Does anyone know of the proper procedure for downgrading to ICS or HC? I really don't feel like bricking my tablet.

PeteSeiler2010 said:
Does anyone know of the proper procedure for downgrading to ICS or HC? I really don't feel like bricking my tablet.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1544486 ....guess you didn't feel like searching either lol...hope this helps

cheeb said:
http://forum.xda-developers.com/showthread.php?t=1544486 ....guess you didn't feel like searching either lol...hope this helps
Click to expand...
Click to collapse
this is this guide I followed and now I am bricked...maybe something different about CM9? dunno...just bricked.

Nandroid and install the ICS leak. I did it about 3 times today and I'm running perfectly fine right now.

I do search and I used that very link to downgrade from the ICS leak back to HC. There were reports of people bricking their tablets using that method when trying to go back to ICS or HC from CM9, I did not want to take that risk.
Sent from my A100 using XDA

bmb1983 said:
this is this guide I followed and now I am bricked...maybe something different about CM9? dunno...just bricked.
Click to expand...
Click to collapse
I'm not sure if CM9 has anything to do with it...but without you stating the process that YOU did i'm not sure if we can help you....
If I were to do this...I would've..
**Flashed 009 leak of ICS through CWM..
**Flashed HC 3.2 rom from the thread....hard reset after rom installs....
**Flashed HC 3.2.1 from thread.....hard reset (or reset from tablet..not necessary but its what I do)...
***Finished...
If this is everything that you did then I'm not sure why you would be bricked...maybe you need to go in the CM9 thread and start probing the devs over there...hope your tab comes back to life..
---------- Post added at 09:15 AM ---------- Previous post was at 09:13 AM ----------
PeteSeiler2010 said:
I do search and I used that very link to downgrade from the ICS leak back to HC. There were reports of people bricking their tablets using that method when trying to go back to ICS or HC from CM9, I did not want to take that risk.
Sent from my A100 using XDA
Click to expand...
Click to collapse
OK....didn't know there was an issue (or potential issue) with downgrading from CM9...thankfully I didn't install that as I'm not that fond of those roms in the first place....hope someone can figure out a solution if this is indeed bricking those who are trying to roll back to HC

That is the steps that i tried...but maybe in haste, i did something stupid.
I am trying to get something out of it with NVFLASH but so far nothing...
Oh well, its a nice paper wieght for now!

bmb1983 said:
That is the steps that i tried...but maybe in haste, i did something stupid.
I am trying to get something out of it with NVFLASH but so far nothing...
Oh well, its a nice paper wieght for now!
Click to expand...
Click to collapse
ok ...first..
cm9 didnt cause anything...remember how u got cm9? you had an unlocked bootloader and a custom recovery...
now u flashed a stock image of ics? guess what...now your bootloader is locked again and your recovery is stock. 9 times out of 10 then someone tries to flash a stock hc rom that doesnt have the hc bootloader and this is where theyre stuck.
seriously guys...going from unlocked to stock and back and forth yohr asking for trouble because people are forgetting steps.
once your unlocked and have cwm....stay there..you did this for a reason. ifs almost impossible to brick this thing with an unlocked bootloader. once your back to stock recovery and bootloaders you can seriously eff things up.
Sent from my SGH-I897 using xda premium

Oh I plan to stay with CWM and an Unlocked boot loader. Thanks for the information!
Sent from my A100 using XDA

PeteSeiler2010 said:
Oh I plan to stay with CWM and an Unlocked boot loader. Thanks for the information!
Sent from my A100 using XDA
Click to expand...
Click to collapse
good choice and no problem!
Sent from my SGH-I897 using xda premium

cheeb said:
I'm not sure if CM9 has anything to do with it...but without you stating the process that YOU did i'm not sure if we can help you....
If I were to do this...I would've..
**Flashed 009 leak of ICS through CWM..
**Flashed HC 3.2 rom from the thread....hard reset after rom installs....
**Flashed HC 3.2.1 from thread.....hard reset (or reset from tablet..not necessary but its what I do)...
***Finished...
If this is everything that you did then I'm not sure why you would be bricked...maybe you need to go in the CM9 thread and start probing the devs over there...hope your tab comes back to life..
---------- Post added at 09:15 AM ---------- Previous post was at 09:13 AM ----------
OK....didn't know there was an issue (or potential issue) with downgrading from CM9...thankfully I didn't install that as I'm not that fond of those roms in the first place....hope someone can figure out a solution if this is indeed bricking those who are trying to roll back to HC
Click to expand...
Click to collapse
So will this procedure wont brick?

PeteSeiler2010 said:
So will this procedure wont brick?
Click to expand...
Click to collapse
if your going to flash stock update.zips with cwm...make sure you take out the bootloader.blob and recovery folder and rezip it.
personally though i would wait. im sure acer will also be releasing an update to 4.0.4 and once source is avail the cm9 guys will have much more to play with. especially once the kernel source is avail.
Sent from my SGH-I897 using xda premium

HC bootloader and stock ROM...
ptesmoke said:
cm9 didnt cause anything...remember how u got cm9? you had an unlocked bootloader and a custom recovery...
now u flashed a stock image of ics? guess what...now your bootloader is locked again and your recovery is stock. 9 times out of 10 then someone tries to flash a stock hc rom that doesnt have the hc bootloader and this is where theyre stuck.
Click to expand...
Click to collapse
It looks as though there's no official update from HC to ICS for Canadian users (stuck at Acer_A100_2.013.03_pa_ca). Of course, there are ways around this, but that's not the point of my post here.
Now that I'm running an unlocked ICS bootloader, and custom recovery, alongside CM10... how would I revert to a stock HC (Acer_A100_1.014.08_COM_GEN1) to obtain service? Are the HC bootloaders not normally included in the stock HC ROM zip? I should add that, if able to revert to the aforementioned, I'm almost positive the option to update the device to the original build (Acer_A100_2.013.03_pa_ca) that it shipped with will present itself.
EDIT: Looks as though I may have been reading through some older posts as the tablet did OTA update to stock Acer ICS:
Image Version - Acer_AV041_A100_RV02RC01_PA_CA
Build number - Acer_AV041_A100_1.017.00_PA_CA
Image P/N - FM.S18A0.0AF

mixednuts said:
It looks as though there's no official update from HC to ICS for Canadian users (stuck at Acer_A100_2.013.03_pa_ca). Of course, there are ways around this, but that's not the point of my post here.
Now that I'm running an unlocked ICS bootloader, and custom recovery, alongside CM10... how would I revert to a stock HC (Acer_A100_1.014.08_COM_GEN1) to obtain service? Are the HC bootloaders not normally included in the stock HC ROM zip? I should add that, if able to revert to the aforementioned, I'm almost positive the option to update the device to the original build (Acer_A100_2.013.03_pa_ca) that it shipped with will present itself.
EDIT: Looks as though I may have been reading through some older posts as the tablet did OTA update to stock Acer ICS:
Image Version - Acer_AV041_A100_RV02RC01_PA_CA
Build number - Acer_AV041_A100_1.017.00_PA_CA
Image P/N - FM.S18A0.0AF
Click to expand...
Click to collapse
From your edit, is everything resolved? I know it can be tricky/dangerous to go from unlocked to HC.

Romman0 said:
From your edit, is everything resolved? I know it can be tricky/dangerous to go from unlocked to HC.
Click to expand...
Click to collapse
Actually, I didn't have to go to HC... just making sure that I could for warranty purposes. But, now that I know that there's an official ICS update for Canadian users there's no need to go back to HC... just need to go back to the locked ICS bootloader (again, only for warranty purposes).
Sent from my A100 using xda app-developers app

AT&T LG NITRO Still cannot root:(

So since I am new to this forum I assume this is where I am able to post since I cannot post in the dec sesction. I am trying to root my lg nitro which i just got form at&t july 2012. It has 2.3.5 android on it and I have rooted my other phones np but this one is annoying. Ive tried all versions of super one click and unlock and doomlord as well.
I assume my nitro just cant be rooted at the moment? ive made sure debuggin is checked and have tried them using card mounted and unmounted. have factory reset and tried fresh still a no go. I noticed in doomlord that i get chmod read only and cannot write superuser.apk reado only as if my phone chmod is set to read only.
Just asking here if anyone knows for sure if my version of nitro can be rooted so i am not banging my head against the wall....though at&t tech upper lvl told me other day lg nitro gets ics at end of july for sure but ya know how that goes.
Thanks in advance for any help.

Hi talrune,
Welcome to the community. Unfortunately, you are not the only one that has had problems rooting the 2.3.5 ROM. AT&T has done a good job at locking it down. Several people have just given up on it.
The best way to get root on your Nitro is to head over to the Development section and flash a pre-rooted ICS ROM. You might also try the method I have listed in my signature. I haven't tried it on 2.3.5 so I would be interested in knowing if it works with it or not.

root ur phone
Hi Guys,
I had the same issue.. tried several times.. with doomlords, tsparkys and superoneclick...
But after multiple retries. finally managed to root 2.3.5 using SuperOneCLick 2.3.2.. and it is fine now..
Never give up,, keep on trying.. ur phone rooting time wud be just round the corner.

Yes I did download honos which i assume it is the prerooted ics and i put it in root directory of my sd card but dont i need phone rooted to put a rom manager on there to then flash the prerooted ics rom?

talrune said:
Yes I did download honos which i assume it is the prerooted ics and i put it in root directory of my sd card but dont i need phone rooted to put a rom manager on there to then flash the prerooted ics rom?
Click to expand...
Click to collapse
You can follow the unbricking guide that will take you back to 2.3.4 which was extremely easy to root.

mattman86 said:
You can follow the unbricking guide that will take you back to 2.3.4 which was extremely easy to root.
Click to expand...
Click to collapse
thanks for the info I found another ics that uses the zip from lg and its sotware and it flashed my nitro to 4.0.3 with no problems so that worked for me. from this link http://forum.xda-developers.com/showthread.php?t=1668476 was very easy using that.

talrune said:
thanks for the info I found another ics that uses the zip from lg and its sotware and it flashed my nitro to 4.0.3 with no problems so that worked for me. from this link http://forum.xda-developers.com/showthread.php?t=1668476 was very easy using that.
Click to expand...
Click to collapse
Nice... that's actually the exact same as HO!NO! ICS ROM. Except not rooted.
Sent from my LG-P930 using xda app-developers app

mattman86 said:
Nice... that's actually the exact same as HO!NO! ICS ROM. Except not rooted.
Sent from my LG-P930 using xda app-developers app
Click to expand...
Click to collapse
Yeah i would have used his but as i said I cannot get my phone to root with any of the methods listed even the ICS version I cant get it to root either. I guess ill have to find a stock 2.3.4 rom to flash to but i assumed ya would have to have root to downgrade to 2.3.4

End our misery
If you get it to work please let me know because im in the exact boat as you. Tried every method many times.
What would be nice to see is someone who has done it on the AT&T LG NITRO HD, upload a video or screenshot slide show of step by step install of ROM, since other instructions dont seem to work for everyone. If i get it to root il be sure to make a better step by step instruction video.

Locked Bootloader Situation in LG's ICS

As many have come to discover, with ICS, LG has gone over to the dark side and locked their bootloader.
So what does this mean for us P93X users? This means that if we upgrade to ICS via the official LG tool or by using an LG ICS .kdz, our bootloader is now locked. This has caused problems for newer users who have managed to gain root access, only to subsequently soft-brick their phone when they attempt to remove default apps or install CWM via Rom Manager.
So what's the good news? It is possible to downgrade to Gingerbread using the Unbricking Guide stickied in this forum. Once on Gingerbread, if a user so desires, our very own HO!NO! has created a CWM-flashable version of official AT&T ICS that will not overwrite the device with the locked ICS bootloader.
The purpose I would like this thread to serve is a place to discuss the nature of the bootloader on the P93X and to answer questions about how it works (in addition to the warning above that I hope new users see). Here are some questions I have:
Which partition is it on our device?
Is it possible to simply overwrite a phone on ICS with a Gingerbread firmware without having to unbrick?
Can we get a collection started of various bootloader images for all the devices (i.e. P930 AT&T/Bell, P935, P936, SU640)?
If my suspicion is correct, anybody who has gone through the Unbricking Guide is currently using the SU640 Gingerbread bootloader, including myself. It's possible there are no differences in the various devices' Gingerbread bootloaders, but from available evidence, I do not believe that is the case. We already know, for example, that anybody who has never unbricked their phone is not able to successfully flash and use the CWM-flashable ICS and ICS leak that HO!NO! has released.
Thoughts?

is there a plan to, or can the boot loader be overwritten in leaked ics?
I rooted my lg nitro and then bricked it within an hour. I flashed the leaked ics and rooted. Like we know cwm and cwm touch don't work with ics. I went back to ginger bread so I could backup my rom and flash custom rooms. I like this flexibility; however, I hate how fast my battery drains. I have tried all roms out here. All suck the juice within hours. ics leaked version With locked boot loader rooted lasts all day. Even listening to music with head phones.
Tried jellybam
Nitrogen with ho!no!
Hono
Cm10
Cm9
And quite a few others I can't remember right now.
Is there a way to get battery life like I get from leaked ics on any of these roms.?
Sent from log nitro rooted nitrogen with gapps

He he dont worry it is normal.....why?
Because its ICS!!!!

The spectrum users at androidforums figured out a way to replace the locked boot loader with the unlocked one. Nobody has done this for the nitro yet but I am sure it is possible. All we need is a dev to make it happen. Unfortunately I am not willing to install a locked boot loader on my phone so I cannot do it. Perhaps another dev can do this?

does spectrum share same partition layout as nitro hd?
I think the unlock process should be as easy as some dd script if we can locate the right partition(s).

arda99 said:
does spectrum share same partition layout as nitro hd?
I think the unlock process should be as easy as some dd script if we can locate the right partition(s).
Click to expand...
Click to collapse
It is not the same but very close.
It is a bit more complicated than a dd script, you also need a unlocked kernel (such as the cm9 kernel).
Contact Neph81 and death2all110 at AF, they are the devs who did this.

Ho!no! did it.
tdmcode said:
It is not the same but very close.
It is a bit more complicated than a dd script, you also need a unlocked kernel (such as the cm9 kernel).
Contact Neph81 and death2all110 at AF, they are the devs who did this.
Click to expand...
Click to collapse
Ho!no! did it. I flashed this modified leaked version. MY battery last for ever now. Thank you HO!NO!
CWM touch works well with this release. The only thing I did not like about the leaked release was the locked boot loader.
NO MORE locked bootloader thanks to HO!NO!. There is also a V20 that was released. Have not tried that one.
I appologize because the answer was already on XDA.
Though my status say junior, I have used this site for my own education for years, but nevr needed to ask any questions until recently. lol
http://forum.xda-developers.com/showthread.php?t=1684032

tdmcode said:
It is not the same but very close.
It is a bit more complicated than a dd script, you also need a unlocked kernel (such as the cm9 kernel).
Contact Neph81 and death2all110 at AF, they are the devs who did this.
Click to expand...
Click to collapse
I searched and found this thread
http://androidforums.com/spectrum-a...oot-cwm-lg-spectrum-4g-ics-linux-install.html
its rooting with qemu + dd some images. But I don't understand why need so many images(and the exact purpose for each of them).
and I don't get the "unlocked" kernel part since we can use stock kernel+GB bootloader on P930.
Anyway, its as easy as some dd script but it might be too risky to figure out the whole thing.

I don't understand why you would want to spend the time and effort on this project when the unbricking method in my signature allows you to restore the P930 gingerbread bootloader, which you can then install CWM on top of and flash your roms all you want.
Just curious, can someone outline why this would be worth the time investment?

hereric said:
I don't understand why you would want to spend the time and effort on this project when the unbricking method in my signature allows you to restore the P930 gingerbread bootloader, which you can then install CWM on top of and flash your roms all you want.
Just curious, can someone outline why this would be worth the time investment?
Click to expand...
Click to collapse
because its more easier than yours.
can be done in one simple shell/batch script.
skoobbarnes said:
Ho!no! did it. I flashed this modified leaked version. MY battery last for ever now. Thank you HO!NO!
CWM touch works well with this release. The only thing I did not like about the leaked release was the locked boot loader.
NO MORE locked bootloader thanks to HO!NO!. There is also a V20 that was released. Have not tried that one.
I appologize because the answer was already on XDA.
Though my status say junior, I have used this site for my own education for years, but nevr needed to ask any questions until recently. lol
http://forum.xda-developers.com/showthread.php?t=1684032
Click to expand...
Click to collapse
sorry but its unrelated. cwm roms don't touch the bootloader part and to have cwm working, you need an unlocked bootloader to begin with.
here we're talking about how to replace a locked bootloader with an unlocked one, so one can install cwm and continue, including installing the rom you mentioned.

arda99 said:
because its more easier than yours.
can be done in one simple shell/batch script.
Click to expand...
Click to collapse
How is it easier ? You still have to install CWM to flash the zip so I do not see the advantage of this either.
Nz

notzippy said:
How is it easier ? You still have to install CWM to flash the zip so I do not see the advantage of this either.
Nz
Click to expand...
Click to collapse
one is like 10-20 steps, another is as easy as 1 click...
and they're the same because cwm is installed regardless???

root then uninstall systemapp

wujianheisheng said:
root then uninstall systemapp
Click to expand...
Click to collapse
This gets rid of the bootloader lock?
And nothing else of importance?

dukkitdalaw said:
This gets rid of the bootloader lock?
And nothing else of importance?
Click to expand...
Click to collapse
That just bricks you...
Sent from my LG-P930 using XDA Premium HD app

arda99 said:
because its more easier than yours.
can be done in one simple shell/batch script.
sorry but its unrelated. cwm roms don't touch the bootloader part and to have cwm working, you need an unlocked bootloader to begin with.
here we're talking about how to replace a locked bootloader with an unlocked one, so one can install cwm and continue, including installing the rom you mentioned.
Click to expand...
Click to collapse
I seem to have missed it. But where is this shell/script located?
Other than the unbricking method.
hereric said:
That just bricks you...
Sent from my LG-P930 using XDA Premium HD app
Click to expand...
Click to collapse
Yes. I was being sarcastic.
That guy is going to ruin someones day with advice like that.

dukkitdalaw said:
I seem to have missed it. But where is this shell/script located?
Other than the unbricking method.
Click to expand...
Click to collapse
It doesn't exist... yet. At least, not for the P93x/whatever else is covered in the Nitro Forum.

Nvm Arda99
I see the link

Hello, I was just reading this post because of my Lg optimus G.
I know that they are two different devices but my question is about LG locking bootloader for our devices.
Does the bootloader relock it self if I flash stock KDZ file?
I was wondering how to get it back to stock so I can get the warranty support from LG.
Thank you

jnhsd0319 said:
Hello, I was just reading this post because of my Lg optimus G.
I know that they are two different devices but my question is about LG locking bootloader for our devices.
Does the bootloader relock it self if I flash stock KDZ file?
I was wondering how to get it back to stock so I can get the warranty support from LG.
Thank you
Click to expand...
Click to collapse
Flashing kdz will replace all partitions, and return your phone to 100% stock.
Sent from my LG-LU6200 using xda app-developers app

Guide for Rooting LG Nitro HD P935/Telus?

Any true root for our devices or any out that are 'proven' to work for ours and sorry if I have missed it, I know there are many or at least one that some have been helpful in pointing out as root guides but need some proof that the Canadian devices have root too please? I am on the latest 4.0.4 ICS and ready to perm-root/CWM or TWRP if thats what I use for recovery, please lead me/us in the right direction?:crying:
Thanks

I used the method listed in these forums for rooting for the bell p930. Worked fine. However you will not be able to install cwm unless you unbrick (back to gingerbread)
Sent from my LG-P935

waxinpoetic said:
I used the method listed in these forums for rooting for the bell p930. Worked fine. However you will not be able to install cwm unless you unbrick (back to gingerbread)
Sent from my LG-P935
Click to expand...
Click to collapse
You can treat me like a newb in this matter cuz I am stock 4.0.4 ICS not rooted 'yet' so what do you mean about the 'unbrick' thing, is there a rooting method that will work that will give me CWM or TWRP recovery like I want to do everything all at once in like one day in possibly 1-2hrs? lol

TheCrow1372 said:
You can treat me like a newb in this matter cuz I am stock 4.0.4 ICS not rooted 'yet' so what do you mean about the 'unbrick' thing, is there a rooting method that will work that will give me CWM or TWRP recovery like I want to do everything all at once in like one day in possibly 1-2hrs? lol
Click to expand...
Click to collapse
If you are on stock ICS you have to go through the unbrick guide to be able to install CWM or TWRP. There are a couple here on the first page, they all essentially do the same thing with slightly different methods, and i would assume they take about a equal amount of time. Just make sure you download the required software and read through the instructions once at the very least before you attempt to begin the process.
Sent from my LG-P930 using xda premium

[Q] Help me save some time, Root-CWM-CM10.1 procedure

Hello guys!
I just received a LG Nitro HD P930 phone.Its ATT branded and running Official 4.0.4 ICS android.
Please help me just in few words:
1. How to root this phone? Name the pro
2. How to install CWM recovery?
3. How to install Cyanogen mod 10.1 (or the most stable custom MULTIlanguage rom)
I read a few threads about this,but they are old or not that described. I read the superoneclick can root the phone, and then just install CWM, put the CM 10 zip to SD card and flash it via recovery?
Is it that simple ? I'm not new to android, I rommed a lot on my Sam Galaxy S, just don't wana brick my new phone.
Just in few word, is it that simple really? you would same me a lot of time
Thank you.

DinkaDanka said:
Hello guys!
I just received a LG Nitro HD P930 phone.Its ATT branded and running Official 4.0.4 ICS android.
Please help me just in few words:
1. How to root this phone? Name the pro
2. How to install CWM recovery?
3. How to install Cyanogen mod 10.1 (or the most stable custom MULTIlanguage rom)
I read a few threads about this,but they are old or not that described. I read the superoneclick can root the phone, and then just install CWM, put the CM 10 zip to SD card and flash it via recovery?
Is it that simple ? I'm not new to android, I rommed a lot on my Sam Galaxy S, just don't wana brick my new phone.
Just in few word, is it that simple really? you would same me a lot of time
Thank you.
Click to expand...
Click to collapse
I'm no expert, but I think if you have ATT ICS you can root, but you can't install CWM or custom ROMs because of the locked bootloader.
You need to use one of the unbrick guides to downgrade your phone to rooted GB, then you can flash custom ROMs like CM10.1.
I'll let someone else post the link to the best unbricking guide... I ended up starting with one and finishing with another because I got stuck halfway.

mpsantiago said:
I'm no expert, but I think if you have ATT ICS you can root, but you can't install CWM or custom ROMs because of the locked bootloader.
You need to use one of the unbrick guides to downgrade your phone to rooted GB, then you can flash custom ROMs like CM10.1.
I'll let someone else post the link to the best unbricking guide... I ended up starting with one and finishing with another because I got stuck halfway.
Click to expand...
Click to collapse
Use this guide: http://forum.xda-developers.com/showthread.php?t=2044645
If you have win 7/8 and get an error when flashing the kdz file look for my solution on the March 11 post of the same thread. Let me know of you have any questions and good luck.
Sent from my LG-P930 using xda app-developers app

That's the guide I used... Worked flawlessly. I have the P935 from Telus..... Was a bit of work, but well worth it....
Sent from my LG-P930 using xda app-developers app
---------- Post added at 05:04 AM ---------- Previous post was at 04:42 AM ----------
As for a ROM.... I am using miroslave__mm's ROM 4.2.2...... Its extremely stable... No reboots, BT works, the screen locks without an issue... The one thing I'm not happy with is that I can't OC my phone or control the voltage, which is a big thing for me to be able to do that..... I tried a couple different kernels and they either don't work, or BT won't work.. I need BT so I am stuck with this one for now.... If I could OC with the kernel that's supplied with this ROM , I would consider this ROM near perfect, for my use.

I use the same guide on windows 7 64 bit it work on the first try
Sent from my LG-P930 using xda premium

Thank you very much guys, I'm gonna do the update today, and report back. I hope I'll succeed !
BTW I have win 7 64bit

Hello guys! I succeeded !! Everything went smooth following that guide. Only problem was that KDZ update since I have win 7. But fortunately I have a windows XP pc here, and I do that step there.
I installed miroslave__mm's ROM 4.2.2 recommended by trauma101, thank you very smooth rom, no problems at all yet.
Once again thank you for saving me time of reading hundreads of threads about update.
Have a nice day !

If you end up having issues with Wifi/LTE, then make sure you're using the proper baseband (the unbricking instructions as linked loads the P936 baseband), if you're not then I suggest you load the P930 v20c baseband available at this link: http://forum.xda-developers.com/showthread.php?t=1842763