I'm copy paste this tutorial from forum.xda-developers.com :The SKY Vega Racer (IM-A770K) owners may also want to keep their smartphones up-to-date. So we thought of giving you a tutorial of how to upgrade SKY Vega Racer (IM-A770K) to Android 2.3.4.
But prior to telling you how to install Android 2.3.4 on SKY Vega Racer (IM-A770K), let’s see what do you want in order to be able to perform the installation. You will have to download 2.3.4 SKY Vega Racer (IM-A770K) port. You will also have to root your SKY Vega Racer (IM-A770K) to prepare it for Android 2.3.4 upgrade. Discover how to root SKY Vega Racer (IM-A770K) and install Android 2.3.4 from here.
Here are the download links of the files you want to update SKY Vega Racer (IM-A770K) to Android 2.3.4
Just before beginning to upgrade your SKY Vega Racer (IM-A770K) to Android 2.3.4 don’t forget to backup your information, as contacts, text messages and the apps installed from Android Marketplace Location who may be lost when the installation finishes.
Now let’s see how to update SKY Vega Racer (IM-A770K) to Android 2.3.4 :
1. Install the ROM Manager on your SKY Vega Racer (IM-A770K). Get it from Android Marketplace Location, then install the clockwork mod recovery.
2. Connect your SKY Vega Racer (IM-A770K) to your PC employing the USB information cable. Copy the “SKY Vega Racer (IM-A770K)_2.3.4.zip” file you downloaded to the SD memory card.
3. Restart your device in the recovery mode using ROM Manager. As soon as in Recovery Mode, go to ROM Manager and select backup / restore to back-up your information.
4. From the Recovery Menu do a total data erase (including Delvik Cache). When completed, go back to Recovery Principal Menu and choose Flash ROM from SD Card. Navigate the location you copied the ”SKY Vega Racer (IM-A770K)_2.3.4.zip” file and follow the directions for installing Android 2.3.4 on your SKY Vega Racer (IM-A770K). As soon as the installation is over, just reboot your SKY Vega Racer (IM-A770K) device and here you go, you’ve just upgraded it to the new Android 2.3.4.
Note: Here Is Link To Download the ROM =The ROM File size is 128 MB, so I split the file into 3 parts :
ROM Part 1 : http://goo.gl/7pyL97
ROM Part 2 : http://goo.gl/ffHU2x
ROM Part 3 : http://goo.gl/l1zKh5To combine 3 parts files above into 1 file just use WINRAR, then extract the files into ZIP format.
If you're having trouble when downloading at downloadsafe.org because there is no offer for your country, you can use USA vpn or USA proxy, at newipvpn.com or proxyboost.net or other vpn and proxy service, so downloadsafe.org will detect you as USA resident and the offer will be open. If any problem with the ROM, maybe because the ROM have corrupted during the download process, you can try to re-download the ROM.
Thank you for visiting Upgrade/Update SKY Vega Racer (IM-A770K) to Android 2.3.4 - Android App Development
Tutorial Video : Easy Way To Download at downloadsafe.org/sharecash.org =