Refresh Roundup: week of September 12, 2011

Your smartphone and / or tablet is just begging to get updated. 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 from 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

  • The HTC Merge on US Cellular can now be bumped up to Android 2.3.4. It appears to be a manual install, so visit here to download the file and learn exactly how to update your device. [via UnwiredView]

  • HTC has added another device to its growing list of phones and tablets that now support the HTCDev bootloader unlock tool. [via PocketDroid]

  • The LG Optimus S on Sprint is now on the receiving end of an OTA Gingerbread rollout. [via UnwiredView]

  • Great news, Samsung Infuse 4G users: you're getting an update. The bad news: it's a maintenance fix, rather than a full-out Gingerbread upgrade. Still, it may be worth the download if you have the time or opportunity. [via AndroidCentral]

  • Samsung has released the kernel source for the Epic 4G Touch. [via PocketNow]

  • Sprint's certainly getting a lot of love this week, and we're not done yet: the Motorola Photon 4G is beginning to push out another smallish bug fix meant to curb WiFi issues experienced by a few users, and appears to be a gradual rollout. [via SprintFeed]

  • The original Motorola Droid X is expected to receive a maintenance refresh as early as tomorrow, which is intended to resolve a widespread issue with the keyboard. If you're in this category, definitely keep a close eye out on this space. [via Droid-Life]

  • We're hearing that the Droid 2 R2-D2 update to Gingerbread, which we originally reported on last week, is officially rolling out to eager fanboys and fangirls countrywide. [via AndroidCentral]

Unofficial Android updates, custom ROMs and misc. hackery

  • Those CyanogenMod7 builds for the HTC Sensation and EVO 3D we were talking about last week? They're now available. As extremely early builds, download and flash at your own risk. [via AndroidCentral]

  • Since we're talking so much about HTC, here's one more thing: you can now grab a ROM for your HTC Desire HD that enables the beats audio technology. [via GSMArena and Android Community]

  • A dev has been hard at work pulling various Motorola Atrix ROMs and porting them over to the Droid X2. The first one available is plain vanilla Android 2.3.4, if you're just not feeling up to using MotoBlur (aka the now-nameless Moto UI). [via Droid-Life]

  • The initial build of the Motorola Droid Bionic bootstrap is available for install, which essentially will enable you to bootstrap your recovery and create backups on your device. Custom ROMs still aren't around for the Bionic yet (although early builds of CM7 began showing up this week), but the bootstrap is a big step toward achieving that goal. [via Droid-Life]

Other platforms

  • Symbian's Anna update is continuing to expand support to more countries, including Italy, Switzerland, Taiwan and Turkey. The refreshes for the US, Canada and Australia -- according to an email from Nokia -- is expected to arrive within the next two weeks. [via MyNokiaBlog]

Refreshes we covered this week