[G Tablet Android Development] irishrally:
I finally got Bottle of Smoke (Android 3.0 Honeycomb) working on my gtab. For what's it's worth, here is my journey (these are not complete instructions, just a rough description of my process).

Assumptions:

I was running CM7 (1.1 bootloader, so same will apply for vegan ginger etc.)

Process:

1. I messed around for too long trying to nvflash using OSX. nvflash does NOT work using OSX (unless you run a windows or linux virtual machine - download virtualbox if you want to try). I ended up setting up Ubuntu 11.04 on an older laptop.

2. I downloaded "nvflash_linux_2010110500.tar.gz" from: https://www.dropbox.com/s/wrcd87u1iy31u4e

A windows user would download "nvflash_windows_20100500.zip" from the same location.

References:

http://www.slatedroid.com/topic/171...-using-either-11-or-12-based-images-g-tablet/

http://xdaforums.com/showthread.php?t=861950

This file downloads the nvflash portion of the SDK so you can execute nvflash commands from your computer to your gtab.

3. As stated in the above references, if you are using a 1.1 bootloader (vegan ginger, CM7 etc.) then you must be on 3358 stock with stock recovery. You can accomplish this by nvflashing (step 4) the stock image found here: http://www.mediafire.com/?mw1mmifazhmvoeh

4. I ran the nvflash shell as described in the above references (need to be in APX mode - power on + volume down). The nvflash worked and the gtab rebooted, but boot looped around the tapntap and "n" boot screen.

5. I accessed recovery (power + volume up) but had no idea how to use stock recovery because I bought my gtab with vegan pre-loaded (not sure it would have been useful anyway). I was able to load up CWM recovery by using the following command in APX mode (copy and paste from references above):

For Windows users: nvflash.exe --bl bootloader.bin --download 9 clockworkmod.img

For Linux users: ./nvflash --bl bootloader.bin --download 9 clockworkmod.img

I rebooted into CWM recovery and flashed format.zip to format all partitions (http://xdaforums.com/showthread.php?t=974422)

I also decided to format data. Flashing the format.zip may have been sufficient to fix my boot looping issues but I just formatted data as well.

After rebooting, stock (tnt) booted up properly. I set up wifi and that's about it.

6. So now I was back to stock, but I was using CWM recovery which will result in a soft-brick if flashed with a 1.2 bootloader based ROM like bottle of smoke. I nvflashed one more time to get back to the stock recovery.

7. Now I had 3358 with stock recovery, requisites for flashing from a 1.1 bootloader to a ROM that uses a 1.2 bootloader like bottle of smoke. But, as mentioned before, I had no idea how to use the gtab stock recovery. I used this resource to figure out how to flash the bottle of smoke.zip using stock recovery: http://xdaforums.com/showthread.php?t=892090

Note: when you download the bottle of smoke rar file, you need to unarchive and you will see that the update.zip and recovery folder containing the needed command file referenced in the link above are there ready to go. Copy these files to your internal sdcard as detailed in the link above.

8. I booted into stock recovery and bottle of smoke loaded properly. I now have a solid honeycomb build running on my gtab. I really haven't noticed any instability, yet, maybe because I fully returned my gtab to stock.

Honeycomb is sweet on the gtab. Thanks to all the devs for making this happen.