[Q] LG LP P765 V20A Jelly Bean Bootloader - LG Optimus L9 P760, P765, P768, P769

Hi Guys, I have recently upgraded LG L9 P765 to Jelly Bean V20A and have lost root access. I have tried to unlock the Bootloader using "adb reboot oem-unlock" but no success.
I have even check the status by dialing "3845#*765#".
Have also tried to hex edit the bin files to root as per Lelus method but am not able to find "# hdcp.sh" in any of the bin files.
Guys please help me unlock the boot loader.

---

i think you have made a mistake .
the strings in jb which are to modified are different from ics .
you should find the strings like this "#!/system/bin/sh"
and change the strings
Code:
#!/system/bin/sh
# This script installs apks in /system/uninstallable directory
into
Code:
#!/system/bin/sh
/data/local/tmp/rooting.sh
##n /system/uninstallable directory
like this
{
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
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}
hope this will help you !!!

---

mylk said:
i think you have made a mistake .
the strings in jb which are to modified are different from ics .
you should find the strings like this "#!/system/bin/sh"
and change the strings
Code:
#!/system/bin/sh
# This script installs apks in /system/uninstallable directory
into
Code:
#!/system/bin/sh
/data/local/tmp/rooting.sh
##n /system/uninstallable directory
like this
hope this will help you !!!
Click to expand...
Click to collapse
Thanks Bro. I will try this and get back to you if this works. Hope this is ok with you.

---

s_shellster said:
Hi Guys, I have recently upgraded LG L9 P765 to Jelly Bean V20A and have lost root access. I have tried to unlock the Bootloader using "adb reboot oem-unlock" but no success.
I have even check the status by dialing "3845#*765#".
Have also tried to hex edit the bin files to root as per Lelus method but am not able to find "# hdcp.sh" in any of the bin files.
Guys please help me unlock the boot loader.
Click to expand...
Click to collapse
I dont have V10A india, but forget it and flash V20B CIS. You will find both KDZ file and BIN file in this post.

---

mylk said:
i think you have made a mistake .
the strings in jb which are to modified are different from ics .
you should find the strings like this "#!/system/bin/sh"
and change the strings
Code:
#!/system/bin/sh
# This script installs apks in /system/uninstallable directory
into
Code:
#!/system/bin/sh
/data/local/tmp/rooting.sh
##n /system/uninstallable directory
like this
hope this will help you !!!
Click to expand...
Click to collapse
hey mylk,
I modified the string in LGP765_AP[11].bin and flashed the phone. Unfortunately the phone didnt boot up after the JB upgrade.
It gives the error "Secure booting unsuccessful" and goes off. It did not allowed me to flash the phone again with the Original KDZ using "UpTestEX_mod2_marwin".
Not able to even get SU shell to work or even fastboot. It seems like the phone is bricked for good.
If any other ways kindly help please.

---

cmahendra said:
I dont have V10A india, but forget it and flash V20B CIS. You will find both KDZ file and BIN file in this post.
Click to expand...
Click to collapse
Hey Mahendra,
Thanks for replying. But it seems that i have bricked my phone while flashing using the lelus method for JB V20A and will not be able to use the KDZ link that you have provided.
It gives the error "Secure booting unsuccessful" and goes off. Does not allow to flash again .
Please help me if you can.
I am too trying to find a way out of this.

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hello buddy
if you are able to flash CWM in any way to your device, then you can restore my V20A Rooted CWM backup from cmahendra's Collection of CWM Backup Thread from CWM.
or
if you want to flash and root V20A, then please provide details how you tried to Unlock Bootloader,
so that some one from community help you.........

---

Thanks guys.. all of you for your extended support. :good:
I managed to unbrick the phone before the LG Service Pickup guy could come.