Your smartphone and / or tablet is just begging for an update. From time to time, these mobile devices are blessed with maintenance refreshes, bug fixes, custom ROMs and anything in between, and so many of them are floating around that it's easy for a sizable chunk to get lost in the mix. To make sure they don't escape without notice, we've gathered every possible update, hack, and other miscellaneous tomfoolery we could find during the last week and crammed them into one convenient roundup. If you find something available for your device, please give us a shout at tips at engadget dawt com and let us know. Enjoy!

Official Android updates

  • HTC One X: Rogers has released HTC's Android 4.1 (Jelly Bean) and Sense 4+ update for over-the-air installation. The software weighs in at approximately 635MB. [MobileSyrup]
  • Samsung Galaxy S Advance: Users in Russia are reporting that Android 4.1.2 (Jelly Bean) is now available for download. What's more, the software has been posted to the xda-developers forums for all to download. [Coolsmartphone]
  • Samsung Galaxy S III: Three has unleashed Android 4.1.2 to its subscribers within the UK. The software is available both over-the-air and through Samsung Kies. What's more, it brings Multi-Window functionality to this handset. [Android Central]
  • Samsung Galaxy Tab 2 10.1 and Galaxy Tab 2 7.0: An update to Jelly Bean is now available within the US for these two tablets. The software is said to weigh in at approximately 311MB and is available both over-the-air and through Samsung Kies. [Android Police]
  • LG Optimus G: Sprint has released an update for this quad-core smartphone that brings longer battery life and improvements to visual voicemail. [Android Police]
  • HTC One S: Fido has released the Jelly Bean update for this mid-range smartphone. [MobileSyrup]
  • LG Optimus G: As promised, an update to Jelly Bean is now available within South Korea for LG's premiere smartphone. [PhoneArena]

Unofficial Android updates, custom ROMs and misc. hackery

  • CyanogenMod: Nightly builds of CyanogenMod 10.1 are now available for the Motorola Xoom (Wingray and Everest), Samsung Galaxy Note 10.1 (N8000 and N8013), and the Samsung Fascinate. [Android Police 1, 2]

Refreshes we covered this week