[LG Optimus L9 P760, P765, P768, P769] kuma82:
You don't have to hold the vol up or anything. I just tried to install fastboot on a fresh and clean windows 7. What i thought was correct, you have not install the omap4430 drivers twice. I just ran Lelus batch script and I only installed omap4430 driver

once

and i ran the option #1. (plain fastboot). To my surprise, the inverted fastboot screen came up (even though I didn't install the driver for the second time) Another thing, I never entered the battery and the inverted fastboot still came up like normal (just so you know, this is strange :eek: ) The most important thing is you can't use fastboot, anything I typed, didn't work.

1. Alright first thing, hit window key and type "cmd" .... right click on cmd (command prompt) and run as administrator

2. Then type this

SET DEVMGR_SHOW_NONPRESENT_DEVICES=1
devmgmt.msc

Note: In Device Manager click the View tab and select Show hidden devices

3. Now look for the LG P2 inside the other devices tab

Right click and select to update driver software and install the omap4430 driver

4. Run Lelus fastboot (as admin of course) and select option 5.

5. Then run the offline flash, by putting your phone in the s/w upgrade mode first.

Take out the battery, then hold vol + key and enter the usb cable into your device (sorry no pics for this). When the s/w upgrade shows up, put your battery back in.

Please do 1. 2. 3. and check if omap4430 driver is installed in these two locations (it doesn't matter if the phone is connected)

MORE INFO

Alright everyone, I did some more troubleshooting and I found some more interesting stuff.

Okay, I downloaded Lelus fastboot and ran the whole setup on another fresh pc (laptop, windows 7 x64).

The first stage was fine (removed battery, & entered usb cable into phone and pc). The omap4430 was detected and placed under other devices (device manager), so I installed omap4430 driver

Now for the second stage (running start.bat), I tried a couple of different things.

I selected option #1 (removed battery & usb cord from phone) Fastboot

Plug USB cable

wait 4 seconds and put battery back in.

waiting for OMAP44xx device...

Okay

1.

I entered the usb cable (only!!) and noticed that fastboot 2.0 (inverted lg) came up for a split second on my phone, and turned back off.

I checked out device manager and I found an "Unknown device" inside Other devices

Note: this did not happen (the other day) on the Desktop running Windows 7 x64. The inverted fastboot did not shut off right away, and an Unknown device was not created (only LG P2)

Now this was the only thing I found on Cory's system

No LG P2 which is what we really want/looking for.

So, I right clicked on it (Unknown device) and installed omap4430 driver again (and it accepted the install) I know that this did not work on your pc CoryKenzie but every computer is different (and usb port).

So I ran start.bat again and selected option #1

wait 4 seconds and put battery back in.

waiting for OMAP44xx device...

I entered the usb cord and did not wait to enter the battery, and fastboot did it's thing and was operating.

I had a new device (OMAP4430 Fastboot USB device) under a new tab Android Phone

I noticed that the Unknown device inside Other devices (device manager) was still there (it should not be).

2.

I uninstalled OMAP4430 Fastboot USB device (under Android Phone) and uninstalled Unknown device (under Other device). Then ran everything again

wait 4 seconds and put battery back in.

waiting for OMAP44xx device...

I entered the usb cable (only!!) and noticed that fastboot 2.0 DID

NOT

COME UP (screen flashed but it did not come up) AND A NEW DRIVER

WAS

NOT CREATED. I was hoping to find an Unknown device or LG P2.

This is strange, I should have got something. I tried again about 3 more times and even rebooted the laptop and the results were the same,

no

unknown device or LG P2.

3. Recommended method

Plug USB cable

wait 4 seconds and put battery back in.

waiting for OMAP44xx device...

This time around, I entered the usb cord &

entered the battery

(I did not wait 4 seconds). Afterwards, I found LG P2 under Other devices

I installed the OMAP4430 into it and ran start.bat all the way through, and fastboot was operating.

The LG P2

was removed

from Other devices and Android Phone tab was created with (OMAP4430 Fastboot USB device) in it.

In conclusion (lol), dam computers!!! :mad:

Don't give up, it's possible that you are not entering the battery at the right time. Entering the battery at the right time is the trick and every device (phone & pc) are different. The main thing you want to see is "LG P2" inside device manager.

In order for me to get it working, I have to enter the battery right away. I leave the phone face (screen) down, battery in left hand & cord in the other hand. Sometimes I stumble with the battery (that's how fast i'm trying to enter it, lol) and I have to try everything again.

Another thing, if you do see an inverted fastboot, but the LG P2 doesn't come up (even after you enter the battery). Take out the USB cable from you computer, and put it in another USB port, hopefully this will make the LG P2 pop up.

Well I hope this info helps some poor soul.

Good LUCK!!!