How to unlock LG Optimus Black p970 bootloader - LG Optimus Black

I am using LG optimus Black P970, running on Android ICS 4.0.4 version, stock android P970 30C firmware version. I want to install custom rom on my mobile phone. What I did, I have rooted my phone succesfully and copied custom rom file on sd card. Install rom manager premium but when I try to install custom rom with the help of ROM Manager it crashes and unable to install, when try to reboot in recovery with the ROM Manager it install stock rom only. I am unable to boot in recovery mode to install custom rom manually. I have tried to boot in recovery mode by pressing DOWN Volume key + Home button then power button but it install stock rom automatically without boot in recovery mode. Please tell me how to unlock boot loader of my phone.

wasi1987 said:
I am using LG optimus Black P970, running on Android ICS 4.0.4 version, stock android P970 30C firmware version. I want to install custom rom on my mobile phone. What I did, I have rooted my phone succesfully and copied custom rom file on sd card. Install rom manager premium but when I try to install custom rom with the help of ROM Manager it crashes and unable to install, when try to reboot in recovery with the ROM Manager it install stock rom only. I am unable to boot in recovery mode to install custom rom manually. I have tried to boot in recovery mode by pressing DOWN Volume key + Home button then power button but it install stock rom automatically without boot in recovery mode. Please tell me how to unlock boot loader of my phone.
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Click to collapse
I have the same problem bro!
Have you found the solution ?

goodguyadam said:
I have the same problem bro!
Have you found the solution ?
Click to expand...
Click to collapse
manaaaa jawabannya ??

Do you guys read FAQ's? Or my noob how to?
Sent from my LG-P760 using xda app-developers app

http://forum.xda-developers.com/showthread.php?t=1111771 look this thread. .

Related

Problem accessing recovery

Hi guys:
I have rooted my phone today using SuperOneClick root. Then I have installed ROM Manager, and installed Clockwork Recovery Mod 3.0.0.5. I have being reflashing Clockwork and recovery menu via ROM Manager because when I turn off my phone and turn it up (holding up power on and vol down button) and press to go to Recovery then appears the error image that is like an Android logo, cellphone and a yellow caution sign.
¿Can you guys help me? ¿What I'm doing wrong?
Thanks!
That's the stock recovery. If you still have a stock rom, it will restore stock recovery unless you delete the following files:
/system/etc/install-recovery.sh
/system/recovery-from-boot.p
Sent from my Nexus One using XDA App
I don't understand.
I have installed to it CM7 last build. And is running without any problems, but I am scared that if I have some problem with the OS and I can't boot to recovery.
It has Clockwork Recovery Mod but I can access it unless I use ROM Manager to start it.
¿I need to delete those 2 files and It will be fixed?
Thanks!
That is definitely the stock recovery (Android with an exclamation in a triangle).
If you have CM7 installed, I've no idea how you got the stock recovery, but re-flashing another recovery should fix it. The two files I mentioned aren't included in CM7, so that's not the problem...
Sent from my Nexus One using XDA App
Agree. That's the stock recovery. Sometimes you need to apply the new recovery twice under rom manager. I did have similar experience. Install a custom recovery again. I beg it will be fine next time. Hope this help.
When I first rooted using a one click method my custom recovery would only stick for one boot. On the xda nexus one wiki there's instructions on how to install a recovery after one click root and get it to stick.
Hope this helps!
Sent from my Nexus One using XDA App

[Q] [Need Help] Reboot recovery mode i got bootloop

I'am on MIUI v2.1a , this rom have not correct build.prop phone identify ( Phone model was P-970 not LG P-970 )
i want correct it , i edit via rootexplorer and i reboot and i got bootloop. its okay i think i can solve this.
1. I flashed back into v20g recovery patched to unbrick
2. When Download complete on Smartflasher my opblack reboot into recovery .
3. when i want touch navigation key ( Vol up/down ) my opblack restart
How i get reboot to recovery without root and usb debug ? i try flash it for 5 times always reboot when i want to press vol button
[ SOLVED ]
I flash the ICS Stock Rom
how if you use menu/home softkey to navigate up/down in recovery, does it still reboot?
I believe that after flashing official stock v20g, you no longer have custom recovery. You will need to root phone. Super one click on computer will do this. Then DL rom manager from market and flash custom recovery. DANGER : Make sure you have GOOD internet connection when flashing recovery. If not, you will brick phone.
froyo 2.2 v10l>z4 root>cwm 5.0.2.0>v10e>v10c>mik _os cm7.1>v10c>mik_os>v10c>cwmBRICK>kdz>v10s>kdz>v20g>super 1click>cwm5.0.2.0>amon ra 3.06>cyanogenmod 7.2>Rashed97 cm10(builds 5+6)
I am now a jelly bean.
sent from my LG p509 using xda app
ibub said:
I believe that after flashing official stock v20g, you no longer have custom recovery. You will need to root phone. Super one click on computer will do this. Then DL rom manager from market and flash custom recovery. DANGER : Make sure you have GOOD internet connection when flashing recovery. If not, you will brick phone.
froyo 2.2 v10l>z4 root>cwm 5.0.2.0>v10e>v10c>mik _os cm7.1>v10c>mik_os>v10c>cwmBRICK>kdz>v10s>kdz>v20g>super 1click>cwm5.0.2.0>amon ra 3.06>cyanogenmod 7.2>Rashed97 cm10(builds 5+6)
I am now a jelly bean.
sent from my LG p509 using xda app
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Click to collapse
no offence, but I believe you dont have or never root/use Optimus Black, right?
indeed in many device and ROMs the step regarding root and custom recovery is root first then flash custom recovery (we also use this step in froyo P970 v10* ROM).
But in P970 GB ROM, the step is opposite, custom recovery first then root (cwm injected to ROM file before flash it, flash the patched ROM, then root it by flashing superuser from cwm)
oktavianno said:
I'am on MIUI v2.1a , this rom have not correct build.prop phone identify ( Phone model was P-970 not LG P-970 )
i want correct it , i edit via rootexplorer and i reboot and i got bootloop. its okay i think i can solve this.
1. I flashed back into v20g recovery patched to unbrick
2. When Download complete on Smartflasher my opblack reboot into recovery .
3. when i want touch navigation key ( Vol up/down ) my opblack restart
How i get reboot to recovery without root and usb debug ? i try flash it for 5 times always reboot when i want to press vol button
Click to expand...
Click to collapse
Try repatching the bin files (Make sure the md5 checksum of the recovery image you are trying to patch matches) or use another one. SFT overwrites most of the phone and the build.prop changes you made previously doesn't affect the system as it is (since it overwritten with v20g) and definately not the recovery (totally separate from system).
If you already have nandroid backup any, try to restore that.
As you said, you are unable to use buttons on CWM.
The best thing for you now is download the (Gingerbread) PATCHED V20S .bin files, just search in XDA or Google and download it and follow the instructions.
I have the same problem in the past, luckily nandroid backup saved me.

[Q] How to install CWM manually

Hi all,
I want to install CWM on my rooted SGS however there appears to be on CF Kernel that matches my JVN Kernel so using the CF method is not an option from what I have read.
So I installed ROM Manager and tried to install it that way but I now get signature verification errors when I go into Recovery.
Next I downloaded the recovery image from the CWM website but I cannot seem to find any information on installing it onto a SGS.
If anyone could offer any suggestions it would be appreciated.
TIA
Greg
Edit: Firmware is 2.3.3
Why dont you just flash JVU then Root it
Comes with CWM ....
As I am guessing you want CWM to flash a rom yes?
If so most Roms require ...from my knowledge a clean install of JVU with ODIN before flashing a New Rom
ghines said:
Hi all,
I want to install CWM on my rooted SGS however there appears to be on CF Kernel that matches my JVN Kernel so using the CF method is not an option from what I have read.
So I installed ROM Manager and tried to install it that way but I now get signature verification errors when I go into Recovery.
Next I downloaded the recovery image from the CWM website but I cannot seem to find any information on installing it onto a SGS.
If anyone could offer any suggestions it would be appreciated.
TIA
Greg
Edit: Firmware is 2.3.3
Click to expand...
Click to collapse
Download this "update.zip". Place it in your SD card. Power off and boot into recovery with the 3 button combination (press power, volume up and home button till you see the boot logo) and select "apply sdcard: update.zip". DO NOT DELETE THIS FROM SD. You should have CWM installed now. Let me know if you have any problem.
You need to root your phone first with update.zip for i9000, download the latest CWM.zip, put it in the storage. Then go to recovery and install the CWM.zip Goodluck flashing!
EwOkie said:
Why dont you just flash JVU then Root it
Comes with CWM ....
As I am guessing you want CWM to flash a rom yes?
If so most Roms require ...from my knowledge a clean install of JVU with ODIN before flashing a New Rom
Click to expand...
Click to collapse
Can you use any version of JVU? eg: Europe, Asia, Australia. Or, should you only use one for your region, in my case Australia.
I have an Australian verion of JW6 (2.3.6), would that be acceptable?
Download this "update.zip". Place it in your SD card. Power off and boot into recovery with the 3 button combination (press power, volume up and home button till you see the boot logo) and select "apply sdcard: update.zip". DO NOT DELETE THIS FROM SD. You should have CWM installed now. Let me know if you have any problem.
Click to expand...
Click to collapse
Thanks for the UPDATE.ZIP, I note it is just a renamed CWM. I did not know you could just rename them and then install them. Thanks.
So, my plan at this stage is to update to 2.3.6 (JW6) and then install CWM via UPDATE.ZIP. Should this work?
TIA
Greg
Yeah you can upgrade first. Flash a firmware or upgrade OTA. You should root your phone first before flashing a custom recovery such as CWM.
Sent from my GT-I9001 using xda premium

Help?

Right, to cut a lonnnnng first post story short, basically, rooted my phone yesterday, went well, installed some rooted apps and was having fun, one app, 3D something, from Google Play. it asked me to restart my phone after setting superuser (i thought this was quite weird) anyway i boot locked my phone - got the typical "Samsung GALAXY Note GT-N7000" and the phone woundnt move from there, i can gt into vol+ home and power and vol- home and power still. so after some research i found i had to flash therelivant stock ROM using odin - so i did. and it worked. then at somepoint today my phone got stuck in a boot loop consisting of the GT-N7000 screen then the samsung spash screen. when i do vol+ home power, i get in red text "E:/error%20in%20/data/recovery_last_kernal_log.txt" - what does this mean? and how(if at all) do i fix it?
i have curently re-flashed stock ROM and vol+ home power & "wipedata/factory reset" and so far so good......
any help or shed light would be a great help
Phone is Samsung GALAXY Note GT-N7000
Flashing the stock rom won't change anything if you have not wiped data. It just restores the system. What rom are you on? JB or ICS? To get everything to factory standards, install philz kernel.
Then boot into Cwm and choose wipe data,-clean before new rom flash.
Once it's done, choose reboot download and flash the rom again with odin. This way anything that the "3d something" might have done will go.
Sent from my GT-I9500 using xda premium
nokiamodeln91 said:
Flashing the stock rom won't change anything if you have not wiped data. It just restores the system. What rom are you on? JB or ICS? To get everything to factory standards, install philz kernel.
Then boot into Cwm and choose wipe data,-clean before new rom flash.
Once it's done, choose reboot download and flash the rom again with odin. This way anything that the "3d something" might have done will go.
Sent from my GT-I9500 using xda premium
Click to expand...
Click to collapse
it was called "Chainfire3d" and could you write the bove in steps?
i currently have flashed stock JB rom... and its working for now, but i dont want to turn it off incase it loops again. so what should i do from here, its currently un-rooted...
thanks a million for your reply
1. Install philz kernel from recovery.
2. Boot into Cwm recovery and choose clean before new rom install.
3. Choose reboot download.
4. Connect to pc and flash rom using odin.
Sent from my GT-I9500 using xda premium
nokiamodeln91 said:
1. Install philz kernel from recovery.
2. Boot into Cwm recovery and choose clean before new rom install.
3. Choose reboot download.
4. Connect to pc and flash rom using odin.
Sent from my GT-I9500 using xda premium
Click to expand...
Click to collapse
so put philz kernel on the ext sdcard
vol+ home power - and install
boot into cwm and choose clean before new rom install
reboot into download
and then flash stock rom?
one last question... will the lastest philz kernel work?
thanks again
i currently have PhilZ-cwm6-XXLT4-OXA-4.93.6-signed on my external sd.... will this do?
yeah any kernel will do as you just need recovery... once the kernel is installed, boot into recovery.. You should see CWM based recovery.
nokiamodeln91 said:
yeah any kernel will do as you just need recovery... once the kernel is installed, boot into recovery.. You should see CWM based recovery.
Click to expand...
Click to collapse
and then clean before new rom install?
xDEADFAMOUSx said:
and then clean before new rom install?
Click to expand...
Click to collapse
yes if you got the philz recovery installed.

[Q] [Help] bootloop with no recovery

I tried to flash the new Kitkat ROM on my stock-rooted ROM but flashed it wrong (as my bootload is not unlocked as needed).
Now I'm stuck on bootloop when I see the new ROM's logo showing up for few seconds but reboot imediately..
My recovery is also gone.. I can't access it.. (I have my backup there, I only need to reach it)
I tried to use flashtool and adb but I can't control them..
How can I flash CWM recovery through any of them?
Please provide link and explain I'm freaking out here..
Thanks!
mcjordan92 said:
I tried to flash the new Kitkat ROM on my stock-rooted ROM but flashed it wrong (as my bootload is not unlocked as needed).
Now I'm stuck on bootloop when I see the new ROM's logo showing up for few seconds but reboot imediately..
My recovery is also gone.. I can't access it.. (I have my backup there, I only need to reach it)
I tried to use flashtool and adb but I can't control them..
How can I flash CWM recovery through any of them?
Please provide link and explain I'm freaking out here..
Thanks!
Click to expand...
Click to collapse
Use fastboot to flash... Just make sure your phone is in fastboot/flash mode first
If your on locked boot loader then you have to do a ftf/flash tool restore
Sent from my C6603 using XDA Premium 4 mobile app

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