Thursday, 2 June 2011

Upgrade GW620 to Android 2.2 Foryo.

I was having Gw620 with v10k firmware (android 1.5). Here am trying to explain the steps did to upgrade it to openetna firmware (Android 2.2). Please refer for reference. Don't forget to watch the videos there in that guide. I will be explaining mainly the areas where i got stuck, and the steps i did to resolve it.

  1. Download the from 
  2. Download android sdk
  3. Download gapps zip (google it)
  4. Prepare it to ready for flasing as per the video on the installation guide.
  5. Copy file to your SD card
  6. Update USB Driver.  For windows, you need to add this to your android_winusb.inf in the android sdk usb driver in the [Google.NTx86] section for x86 
    ;LG eve%SingleAdbInterface%        = USB_Install, USB\VID_18D1&PID_D00D%CompositeAdbInterface%     = USB_Install, USB\VID_18D1&PID_D00D&MI_01;LG GW620%CompositeAdbInterface%     = USB_Install, USB\VID_1004&PID_0C02&MI_01%SingleBootLoaderInterface% = USB_Install, USB\VID_18D1&PID_D00D
  7. Get your phone in fastboot mode.
           Here i got stuck. My phone dont have a fast boot mode. i tried hitting space again and again until i realized that my v10k firmware dont have a fastboot. (Yes i shouldn't have updated my phone earlier with the Lg update tool...they removed the fastboot with it). Now i want downgrade it to original stock one. 
I used LG-Util package for it and i used Image with fastboot for 900 Mhz 3G:

For details on how to downgrade please refer

The update was stuck at 4% , and it always crashed saying communication failure. Here i tried to switch my usb port and changed the compatabilty of the KP500-Utils-EN.exe file to win xp sp2. I was runnig on Win 7.
Then it worked and i successfully downgraded the firmware. (plz note i wasted a lot of time before this by  trying to flash  V10H_00.kdz file. i dont know why, it was not working for my phone)

8, Finally downgraded to v10G which have flash mode.
9. Now Get your phone in fastboot mode:

  • Remove battery
  • Slide out the keyboard
  • Plug in USB connector (still with the battery removed)
  • Press SPACE (or SPACE+MENU for newer firmwares) just when you see the screen slightly light up, untill the fastboot text appears on the screen.  
10. If the phone is not detected by windows correctly, i.e still listing it on Other devices section on Devie manager. Then you need to Update it's driver to the usb driver inside the android sdk folder. (mentioned on step 6)
11. Now take command promt (cmd), run it as administrator.
12. Change directory to sdk tools folder.
13, Run  fastboot -w
               Here i got a dll file missing error. So i added the folder named platform-tools which contained that dll to PATH of my laptop. 

14. Execute the below commands. 
fastboot flash boot boot.img
  fastboot flash system system.img
15. Wait until the commands finished
  1. Unplug the usb
  2. Reinsert the battery
  3. Poweron the phone
  4. Wait (On the first boot, the applications are optimized. This can take up to 10 minutes)
After the restart...install the google apps like Gmap,gmail,calender etc by taking the openetna app from the menu. This  will install the content from file
Enjoy Android 2.2 Foro...
Do post your questions and comments in the comments section below....


Christian Tanudjaja said...

Hi Ajith George, My name is chris. I have the same problem with firmware v10k. Could you tell me the root password, cause i have tried EVE&ADAM&&620LOVE! for many times and it's failed. Thank you before.

Ajith George said...

i dont think i used any root password. Sorry dont remember it.

Mohammad Adha said...

forget bout that...this actually work...thanx a lot man..but got few problem like not responding...otherwise...its really nice

Felix Boakye Mensah said...

why dont you do it a video format because i am having a hard time doing it...

Anonymous said...

i m facing problem with istalling V10G_00.kdz
and it say some error wile that lg update application opens and serch for connection...but at Downloading tab in Lg software LGP500 utsl crashes....
aas i waas tryin V10H atleast it was saying connection problem nd was getting stuck at 4% so itried your way and the helping link is not opening.
help me

Ajith George said...

@Anonymus Make sure you updated the USB driver. Try other USB ports on your PC. Can also try a restart of the PC