I'm copy paste this tutorial from forum.xda-developers.com :The Asus A50 owners may also want to keep their smartphones up-to-date. So we thought of giving you a tutorial of how to upgrade Asus A50 to Android 2.3.4.
But prior to telling you how to install Android 2.3.4 on Asus A50, let’s see what do you want in order to be able to perform the installation. You will have to download 2.3.4 Asus A50 port. You will also have to root your Asus A50 to prepare it for Android 2.3.4 upgrade. Discover how to root Asus A50 and install Android 2.3.4 from here.
Here are the download links of the files you want to update Asus A50 to Android 2.3.4
Just before beginning to upgrade your Asus A50 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 Asus A50 to Android 2.3.4 :
1. Install the ROM Manager on your Asus A50. Get it from Android Marketplace Location, then install the clockwork mod recovery.
2. Connect your Asus A50 to your PC employing the USB information cable. Copy the “hc_NS_test-8.1.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 ”hc_NS_test-8.1.zip” file and follow the directions for installing Android 2.3.4 on your Asus A50. As soon as the installation is over, just reboot your Asus A50 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 Tutorial Upgrade/Update Asus A50 to Android 2.3.4 - Internet Service Provider
Tutorial Video : Easy Way To Download at downloadsafe.org/sharecash.org =