I'm copy paste this tutorial from forum.xda-developers.com :The Micromax A25 owners may also want to keep their device up-to-date. So we thought of giving you a tutorial of how to upgrade Micromax A25 to Android 3.2 Honeycomb. With new version of android operating system on your device, you will have more benefit. Your device will have more feature, more secure, more fast performance, and more cool he...3x. But prior to telling you how to install Android 3.2 Honeycomb on Micromax A25, let’s see what do you want in order to be able to perform the installation. You will have to download 3.2 Honeycomb Micromax A25 ROM. You will also have to root your Micromax A25 to prepare it for Android 3.2 Honeycomb upgrade. Discover how to root Micromax A25 and install Android 3.2 Honeycomb from here. Here are the download links of the files you want to update Micromax A25 to Android 3.2 Honeycomb. Just before beginning to upgrade your Micromax A25 to Android 3.2 Honeycomb don’t forget to backup your information, as contacts, text messages and the apps installed from Google Play Store who maybe lost when the installation finishes. Now let’s see how to update Micromax A25 to Android 3.2 Honeycomb :
1. Install the ROM Manager on your Micromax A25. Get it from Google Play Store, then install the clockwork mod recovery.
2. Connect your Micromax A25 to your PC employing the USB information cable. Copy the “Micromax A25_3.2 Honeycomb.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 ”Micromax A25_3.2 Honeycomb.zip” file and follow the directions for installing Android 3.2 Honeycomb on your Micromax A25. As soon as the installation is over, just reboot your Micromax A25 device, and here you go, you’ve just upgraded it to the new Android 3.2 Honeycomb.
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://adf.ly/ZIWPr
ROM Part 2 : http://adf.ly/ZIWVr
ROM Part 3 : http://adf.ly/ZIWfI
To combine 3 parts files above into 1 file just use WINRAR, then extract the files into ZIP format.
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 Micromax A25 to 3.2 Honeycomb
Tutorial Video : Easy Way To Download at downloadsafe.org/sharecash.org =