My phone is a Samsung Galaxy S II (GT-i9100). My brother gave it to me once he bought a new phone. It was already rooted and it is using CyanogenMod running Android 4.2.2 (Jellybean). The kernel version is 3.0.31-CM-gd3ad65f. For some reason, the CyanogenMod version appears as 4.2.2 in 'About Phone', so I'm thinking it's 10.1. I have not updated to the recent RC releases yet. I am not sure what other mods my brother applied to his phone, but when I boot it the loading screen for the Sony Xperia (animated colored ribbons) appears before the home screen shows up. I tried dialing #1234# and it did not work, so I'm guessing he installed a custom firmware on the phone too.
Yesterday, I was doing some QA work. I accidentally pulled my phone from the USB cable before properly unmounting it in Windows 8 Home Premium 64-bit. Then, I used the phone to record a video of some testing I was doing on my iPad. Everything went fine until the phone suddenly shut off. This made no sense to me because the battery had most of its charge left (it was at around 85%). I held down the Power button to turn it back on, but it was not turning on at first until I reconnected it to the phone charger. After a few seconds, I unplugged the phone from the charger and tried turning it on again. The initial loading screen with the Samsung Galaxy Sii logo appeared (a hard reboot according to this FAQ(http://forum.cyanoge...out-my-problem/)). The phone turned on normally and for a few minutes everything was okay. Then, it switched off again. I searched online for a solution and found out that I could access Recovery mode on the phone by holding down Vol Up + Home + Power until the screen flashed. That got me into the CWM Recovery mode (the version was 6.0.29). I decided to reboot from it to see if that would help things. For several hours my phone was back to working as normal.
Today, I was using my phone to listen to a seminar online through GoToMeeting. It was working alright but then the phone switched off at random again. This time I booted back in to Recovery mode and decided to do a backup of my phone just in case. Unfortunately, when I tried to, I got a message saying this: 'Can't mount backup path'. I suspect that there's no external SD card in the phone but I want to check that and make sure so I don't make a fool out of myself.
So here are my questions:
a ) If you can't backup to an external SD card, is there a way to backup to a computer? (Sorry if this has been asked already.)
b ) Has anyone run into an issue where you record a video for 2+ mins and then the phone suddenly switches off?
c ) Would it better to just do the update so I don't run into this problem again?
Any help would be much appreciated. I have also attached a last_kmsg log to this post.
Edited by roplotfan, 10 September 2013 - 10:27 PM.