It's not quite that simple, C800 is mdpi while E739 is hdpi. Also, the partition sizes are different, and the e739 kernel doesn't have the hardware keyboard. I'm pretty sure that's enough to require a completely different build.

The kernel builds fine from LG's source code, but I'm not convinced it'll be compatible with cm9. Also, I can't get a kernel config to build CM9 for me. I'm trying to adapt the /arch/arm/configs/univaq_perf_revc_defconfig that's used in LG's kernel build for the CM9 kernel but am not having much luck... Any ideas?

I was unaware that the Q was MDPI.
No, that much of ideas. I'm not a DEV, i just port ROMS to the E739

Our phones are identical, except for mine been HDPI and yours MDPI.

---------- Post added at 01:46 AM ---------- Previous post was at 01:39 AM ----------

You CAN try and port a rom from the e739.
You'll just have to resize the images to fit your screen.
http://forum.xda-developers.com/showthread.php?t=785864

Use your phone's kernel and such important files.

It might boot, but the differences do extend beyond screen size. The camera chips are different, there is an additional LED flash on the Q, and no front-facing camera. It seems the softkeys and touchscreen also may use different drivers if I am reading the kernel configuration correctly. Still, I am using the e739 as a jumping off point.

If you need help, just ask here or in a PM.

Boy do I need help! Lol. Would you happen to know what needs to be done to a gingerbread kernel to get it to work with ICS?

Cyanogenmod did that for us lol so I haven't really messed with the kernel.
Except for editing the BOOTCLASSPATH but that's bout it.

But if I were you I'll start working with a GB 2.3.7 rom.

Sent from my LG-E739 using Tapatalk 2

2b doesn't work, writes it out and when i reboot to check CWM, it's still stock recovery and wipes out the phone. How do I get this on my phone? Fastboot doesn't work on this device.

fastboot does work. You can also get it into fastboot by holding down home as you turn on the phone.

Originally Posted by chui101

fastboot does work. You can also get it into fastboot by holding down home as you turn on the phone.

Tried it. Just boots like normal, gotta do acrobatics holding home and plugging in USB cable because it'll draw power from USB and screw it up.

Let's just make an update.zip so we can go into stock recovery and just flash on the new zip and not fiddle around with fastboot and dd niether of which work.

Try porting some images from the P500. It MPDI.