well i been messing with an m835 all day and this is a bit about some little "easter eggs" i found in the build.prop file. ONLY TRIED ON STOCK ROM! to activate them you will need a root explorer, i use the paid app "root explorer" First, open root explorer and navigate to "system" MOUNT EXPLORER AS READ/WRITE..................................... . long press the "build.prop" file and copy it. | THIS PART CAN BE SKIPPED, I ADDED IT AS A PRECAUTION tap the phones back key and open "sd card" | paste the build.prop in the main directory of the sd card.------ go back to "system" and again, long press the "build.prop" when the menu opens scroll down and select "open with text editor" now find these lines (i will give landmarks if i can). tap the back key to close keyboard for easier navigation TETHER FOR LINUX/WINDOWS7/VISTA: its near the bottom of the file , slowly scroll up untill you see the "#----------------------froyo" it'd directly below the third line starting with "# DTS201" change "true" to "false" after "tether.denied=" now when you look in "settings>wireless and network" a new option will be available for tether directly under "bluetooth settings". i can confirm it works on ubuntu 10.10 MORE MMS RECIPIENTS PER SEND: follow the tether instructions, if you look a bit further down the list (four lines down) you will see "mms.cfg.max_recipients=10" change the "10" but watch out, sending to more than 15 has proven difficult for me and 30 crashed my phone MORE COMING... but those 2 were the best so far, you can change dalvik heap too but i'm gonna make you look for it since you can brick your phone good by screwing with it.