Just thought I'd pass along my experience with upgrading to JB.
I have an international GT-N7000 which I was running the last ICS from Samsung, and with the Speedmod .13 kernel.
I never flash anything other than an official release.
I updated via pc-odin to the April DBT version downloaded from Sammobile.
After updating, I uninstalled SU, then loaded the Speedmod kernel for this release (LT4), via pushing it through recovery.
After rebooting, the splash screen lit up, then went blank, but the sound continued. NO video, or button lights.
Pulled battery, no go. I then downloaded (what I thought) was the Philz kernel for this version, rebooted. Everything
came up, along with the nags about not being rooted for some reason. I turned around to do something, and noticed
that 2-3 minutes later the battery was down 15% than 2-3 minutes earlier, and, the back was WARM. Pulled battery,
rebooted, still no go. Reflashed the entire machine, pushed Philz for (what I thought) this version (LT4), rebooted,
and again, slow, battery diminishing, back warm). Ran quad, score was 1/2 of what it was before the flash.
Did some more checking and there it was, I didn't upload the CORRECT kernel. Once I downloaded the CORRECT
kernel, rebooted, charged it up, and the back is not warm, battery sips juice, quad score back where it should be.
With all the roms, kernels floating around, might want to WAIT til daylight to update, instead of after a long day
at work, dealing with idiots, and before 10pm at night...ESPECIALLY if you are in your 50's ;)
That or grab some red bull or something, and double check those kernels.
Might help someone dealing with battery drain, slow, freezing displays, poor quad scores etc...
I have an international GT-N7000 which I was running the last ICS from Samsung, and with the Speedmod .13 kernel.
I never flash anything other than an official release.
I updated via pc-odin to the April DBT version downloaded from Sammobile.
After updating, I uninstalled SU, then loaded the Speedmod kernel for this release (LT4), via pushing it through recovery.
After rebooting, the splash screen lit up, then went blank, but the sound continued. NO video, or button lights.
Pulled battery, no go. I then downloaded (what I thought) was the Philz kernel for this version, rebooted. Everything
came up, along with the nags about not being rooted for some reason. I turned around to do something, and noticed
that 2-3 minutes later the battery was down 15% than 2-3 minutes earlier, and, the back was WARM. Pulled battery,
rebooted, still no go. Reflashed the entire machine, pushed Philz for (what I thought) this version (LT4), rebooted,
and again, slow, battery diminishing, back warm). Ran quad, score was 1/2 of what it was before the flash.
Did some more checking and there it was, I didn't upload the CORRECT kernel. Once I downloaded the CORRECT
kernel, rebooted, charged it up, and the back is not warm, battery sips juice, quad score back where it should be.
With all the roms, kernels floating around, might want to WAIT til daylight to update, instead of after a long day
at work, dealing with idiots, and before 10pm at night...ESPECIALLY if you are in your 50's ;)
That or grab some red bull or something, and double check those kernels.
Might help someone dealing with battery drain, slow, freezing displays, poor quad scores etc...