I am trying to get my old Gear 2 working, again. It is running stock firmware (I can't find out which version), no root. It was working perfectly, but only held a charge for a couple hours, so I decided to install a new battery. It seemed like a pretty straight forward installation process, but once completed, I could not get past the "Samsung Gear 2" boot screen. It just hangs there.
I can get into the "advanced options" by rebooting, then clicking the home button 3 times. I can long click continue (gets stuck), I can long click download (more on that later), and I can long click on "power off". However, when I try to long click on "Recovery", nothing happens. It just boots and then hangs at the same screen.
I decided to try to install one of the custom ROMs to see if that would fix the issue. I followed instructions to use Odin to flash.
I downloaded and ran sdb.exe. I downloaded and installed "Samsung_USB_Driver_for_mobile_Phones". I downloaded several ROMs, including R380XXU0BNE5rootfs_root.tar (et. al), Gear2_Wear_Lolipop_5.1.1_06292015.tar, and Gear2_Wear6_Rel6
I opened Odin (tried with both 3.09 and 3.13.1), put my watch into download mode, connected to PC. Odin recognized the watch with a light blue "0:[COM4]. The only boxes "ticked" are "Auto Reboot" and "F. Reset Time" I put the file into the AP section and hit "Start". It shows that it is beginning the process, but then FAILS.
Any help would be greatly appreciated. Thanks.