Google posts Android 4.1.2 factory images for Nexus 7 and Galaxy Nexus

Google released factory images for Android 4.1 Jelly Bean about a month after announcing the mobile operating system during its developer conference in June. But the Mountain View, Calif.-based corporation only waited two days after releasing the Android 4.1.2 update to post Google Nexus 7 and Galaxy Nexus factory images.

Using the factory images, the two devices can be updated to the latest Android version, 4.1.2 build number JZO54K, without waiting to get them over the air by cellular radio or Wi-Fi, or to be restored to stock after using a custom Android distribution such as CyanogenMod 10 or AOKP Jelly Bean. The factory images have only been updated for the Google Galaxy Nexus HSPA+ sold via Google Play and Google Nexus 7, yet they're likely to make an appearance for older devices as well, such as Nexus S.

For the Google Galaxy Nexus, three files have a newer time-stamp:

• bootloader-maguro-primelc03.img -- bootloader, dated October 4
• radio-maguro-i9250xxlf1.img -- radio, dated October 4
• userdata.img -- user data filesystem, dated October 3

For the Google Nexus 7, two files have a newer time-stamp:

• bootloader-grouper-3.41.img -- bootloader, dated October 3
• userdata.img -- user data filesystem, dated October 2

A newer time-stamp likely indicates updated files. Using the "How to install Jelly Bean on Galaxy Nexus" guide the Google/Samsung Galaxy Nexus can be updated to Android 4.1.2 Jelly Bean by replacing the filenames from the guide with the current ones, and in a similar fashion the Google Nexus 7 tablet can be updated as well using only the applicable included files.