[Root] Help, can't root v20c - LG Optimus Black

Posting on behalf of a friend. Here goes:
0) Yes, we've read http://forum.xda-developers.com/showthread.php?t=1487105
1) Stuck on V20C. The official LG update utility says this is the most up-to-date version.
2) Have tried http://forum.xda-developers.com/showthread.php?t=1442588
3) Have tried http://forum.xda-developers.com/showthread.php?t=1480392
4) Have tried method on Cyanogenmod wiki.
Nothing worked. Is there a method that's confirmed to work for V20C out there, or have we just screwed up something? Attempting to eventually install Cyanogenmod.
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indeed you can't downgrade using LG updater.. no problem, friend, here's your solution..
http://forum.xda-developers.com/showthread.php?t=1448803
1. download the v10a firmware
2. install the firmware using SmartFlash Tool
3. root the v10a using blackjack
4. install ROM manager, and from there, install CWM
5. you can use the CWM recovery to install another custom ROM

Go here http://forum.xda-developers.com/showthread.php?t=1566532 by the end of it you'll have your version ready to flash and root at your will
Sent from my LG-P970 using xda app-developers app

Ah, thank you very much.
We weren't aware that the methods for V20C and other V20 firmwares were interchangeable - after several failed attempts and several more perusals through XDA we were beginning to suspect that V20C was unrootable as nobody seemed to mention this version.
Glad we were wrong, now happily running CM7. Phone is reportedly much faster and responsive now. Thanks for the help!

dSayonarab said:
Ah, thank you very much.
now happily running CM7. Phone is reportedly much faster and responsive now. Thanks for the help!
Click to expand...
Click to collapse
Do you have any sound problem I mean distorted sound in cm7 in ear piece and is opposite party to whom you talk is getting your voice clear?
Sent from my LG-P970 using xda app-developers app

Related

SGS problem .

My SGS has developed a fault 2 days ago I switched the phone off & the next thing I know is I get what looks like a battery laid on its side on the main screen, it appears for 15 seconds then dissapears for 15 seconds & repeats. I can find no way to turn the phone back on while it is like this & have resorted to reloading 2.3 Gingerbread but if once reloaded I then switch the phone off then the problem comes back.
Has anybody come across this problem before & knows how to cure it or is my phone knackered ?
I tried to add a picture of the symbol on the screen & I do not have enough posts to be allowed to.
Have you tried charging it? Silly question but you would be surprised.......
Sent from my GT-I9000 using XDA Premium App
No question is silly, but yes I have charged it
Have you tried flashing a "stock Rom" yet?...
Hopefully this will mean more to you than it does to me !
Is this a "stock rom" :-
firmware 2.3.3
Baseband version I9000XXJVK
Kernel version 2.6.35.7-I9000XXJVK-CL75655 [email protected]#2
Gingerbread.XXJVK
If it is not a stock rom were can I find one ?
Thanks
Colin
download JVP OR JVQ go to samfirmware.com they are available there
deadey3 said:
download JVP OR JVQ go to samfirmware.com they are available there
Click to expand...
Click to collapse
Many thanks, just installed jvq but still have same fault
I would try an ezbase flash, search in dev for ezbase and follow instructions to the letter, this should get you up and running on a basic rooted deodexed rom, from there you can try a reflash of whatever you want
Sent from my GT-I9000 using XDA Premium App
it does that when pluged in or "unpluged"?
t1mman said:
it does that when pluged in or "unpluged"?
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Either plugged or unplugged
This is the symbol on screen :-
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[Q] Kies crashed Galaxy S update now bricked !!HELP!!

Hi.
I tried updating my Samsung Galaxy S to the latest firmware using Kies (all official), as it was updating i got this message: "disconnect the cable, then battery, then replace battery and turn on and then try again"
So i followed the given steps and i get this screen:
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I searched on this forum and found a thread (http://forum.xda-developers.com/showthread.php?t=1134975) which i followed and lead me to this screen:
http://2.bp.blogspot.com/-h9VbztnoEqs/TamSqYdBRyI/AAAAAAAAAEs/oxp7FUo5WRs/s1600/samsung-galaxy-s-download-mode.jpg
Only problem is, what should i do after this? It's on that screen. I dont want to root it (yet...), but want to update it to its latest firmware.
Kies it probably the worst, misguided software i've ever used.
Can you give a link to the official latest firmware, so i can install on to the phone.
Thanks
You could also try "emergency recovery" or something like that from the Kies. Our use Odin/Heimdall to flash stock rom. Don't worry you'll get your phone back up and running
Sent from my sandwiched SGS
I tried Emergency Recovery on Kies, nothing was coming up, so that was a fail...
Can someone please link me to a good tutorial to Install a stock rom on to my phone please?
Thanks.
Edit:
I've found this Tutorial, should i refer to it for my situation?
Edit 2:
Can some one link to a ROM that i can use for "[GUIDE] Flash/Install/Update to Gingerbread 2.3.4 to I9000" as the current one linked on the thread is dead.
http://forum.xda-developers.com/showthread.php?t=1139050
[GUIDE] Flash/Install/Update to Gingerbread 2.3.4 to I9000: Detailed guide for n00bs
Use jvu, one of the latest official:
http://hotfile.com/dl/140301534/be8872c/I9000XXJVU_I9000OXAJVU_OXA.rar.html
No need to put anything to your sdcard as you dont have cwm.
Read the guide, get odin and 512 pit
Use search.
Sent from my GT-I9000 using Tapatalk
Thanks for the links!
I have looked everywhere and i cannot find the 512.pit, only one i found had a dead link.
Can you link me to a working link please?
Thanks
Edit 2:
Hey, nevermind, i manage to find the link and download.
I've installed the firmware it is 2.3.6! So happy
Thanks a million!

[Q] SU660 ICS Brick?

Hi all,
i just tried to install the ics rom v30c on my p990 (su660), no problems on the installing with smartflash,
but when i want to turn my phone it gets stuck on the lg bootlogo, so i thought this rom is only for the su660, why does this not work??
so i checked my phone again, under the battery is written: made in korea... so this is a su660 right?
so people can someone tell me wheres the fault?? ^^
ICECOLDKILLAH said:
Hi all,
i just tried to install the ics rom v30c on my p990 (su660), no problems on the installing with smartflash,
but when i want to turn my phone it gets stuck on the lg bootlogo, so i thought this rom is only for the su660, why does this not work??
so i checked my phone again, under the battery is written: made in korea... so this is a su660 right?
so people can someone tell me wheres the fault?? ^^
Click to expand...
Click to collapse
Wow you were trying to install SU660 ROM on P990? Nice idea m8, I'm convinced if you try it again (maybe take the latest .kdz from today) it will work! Don't forget to perform a full wipe and format your SD cards before. At your own risk of course, but hey maybe you are the guy who can finally tell us if the su660 ROM works on our p990s ! :good:
But seriously, if you don't even know if you own a P990 or a SU660 you shoudln't be flashing around and instead inform yourself a bit better before you start doing this.
If your bottom buttons look like this you have a SU660 (which I believe you don't have)
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It's only the SU660 if it has two capacitive buttons and one physical button at the bottom.
The p990 has 4 capacitive buttons below.
Sigh, another bambi (no offense) on XDA developers who found out one of the only ways to potentially fully brick his phone. Have you tried nvflash and smartflash? You could have averted this by googling su660 but....
Sent from my LG-P990 using xda app-developers app
Sent from my LG-P999 using xda app-developers app

Newest OFFICIAL OUYA OTA Download

As Skumler is currently down, you can use this guide to grab ONLY THE NEWEST OTA download.
Visit:
https://devs.ouya.tv/api/firmware_builds
On the page you will find this:
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that link there is the current NEWEST OTA zip for flashing.
enjoy!
Good tip, thx
Sent from my GT-I9505 using XDA Premium 4 mobile app
Does this update require agreeing to the ridiculous TOS they have implemented? I'm considering changing from StockPlus, but think it's completely ridiculous that they should require my signing a draconian TOS over 6 months after I started using it.
Is someone be able to disable it from the Rom? Which of course is a huge breach of the TOS if they signed it already. The way they have implemented the TOS is probably illegal, but I certainly don't have the money to challenge it.
Sent from my SCH-I535 using Tapatalk
Good tip, this still works with 1.2.771.
SGS2Pwns said:
As Skumler is currently down, you can use this guide to grab ONLY THE NEWEST OTA download.
Visit:
https://devs.ouya.tv/api/firmware_builds
On the page you will find this:
that link there is the current NEWEST OTA zip for flashing.
enjoy!
Click to expand...
Click to collapse
Can I directly flash that from within CWM?
DrBytes said:
Can I directly flash that from within CWM?
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Click to collapse
Yes, but keep in mind there is a newer official rom out than is shown there. You can use Rayman's automated page:
https://ouyafw.skumler.net/
ph1nn said:
Yes, but keep in mind there is a newer official rom out than is shown there. You can use Rayman's automated page:
https://ouyafw.skumler.net/
Click to expand...
Click to collapse
.. actually .. this is the way to get the latest .. skumler show latest rom is 1.2.853 .. while the real latest is 1.2.858 .. .. cheers

SGS slow booting and all crashing

Hi,
I have problem with SGS. When I got it from my friend there was Android 2.3.3. When i turn on the phone, booting took maybe 30minutes, then all apps started to crash. So I did wipe data and wipe cache in system recovery but it didnt solve the problem. Then I flash over Odin official firmware but still booting takes about 30minutes and all apps are crashing. I tried to flash three files rom via odin too but it didnt help. So please help, i really dont know what to do now, i tried everything
Phone is non-rooted, there is official 2.3.6 but all is crashing so it is unusable.
Thanks and sorry for my english
Sent from my GT-N7100 using Tapatalk
Could you try custom roms like mackay
Sent from i9001
But how can I root it without using phone? Because all is crashing in system, I cant di anything on phone. Can I root it with computer?
Sent from my GT-N7100 using Tapatalk
majko11293 said:
But how can I root it without using phone? Because all is crashing in system, I cant di anything on phone. Can I root it with computer?
Sent from my GT-N7100 using Tapatalk
Click to expand...
Click to collapse
yes you can, use odin and the download menu of the phone (turn it of, then turn it on and press volume down + home + power buttom for a few sec)
there are a few guids in this forum how to do that, just search for it
majko11293 said:
Phone is non-rooted, there is official 2.3.6 but all is crashing so it is unusable.
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[Tutorial] How to Unbrick, Flash, Downgrade, Root, Update i9000 from Froyo to Kit Kat to flash a gingerbread speedMod kernel , it will give you root and CWM, than enter CWM to format everything than flash the gingerbread stock ROM with the PIT file......BUT First read everything to understand first
Check this out! Links to useful Guides and " Banned " Documentaries ​

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