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dimanche 6 septembre 2015

Flashed wrong recovery, now stuck in Odin/Download mode: "Could not do normal boot"



First time venturing into rootin' 'n bootin' Android devices. Hopefully will have a long pleasant journey ahead, but due to a silly oversight, I flashed the wrong recovery file to my device (hangs head in shame). I'm an seasoned coder, but am somewhat new to Android.

Some info:
Model: SM-N910G (SnapDragon)
Device does not want to boot normally, stuck in downloading mode. The screen shows the following:
"Could not do normal boot. ODIN MODE (HIGH SPEED)" Reactivation lock is "OFF".

[x] device is rooted and was running stock TouchWizard (based on Lollipop 5.0.1)
[x] can't get the phone to enter recovery mode (by pressing PWR+Menu+Volume Up)
[x] device is not recognised in ADB (using "adb devices")
[x] Samsung Kies3 does recognise that there is a device but says it's unsupported
[x] device is recognised in Odin Windows (blue comes up)
[x] device is recognised in Heimdall on OSX (however, I have not used Heimdall for flashing at all yet)
[x] I now have to pull the battery to turn it off
[x] my main computer is a fast MacBook Pro, but have access to older/slower Windows 7 laptops (with only 2GB RAM).

I had the device rooted and working fine except for the fact that I was getting "dm-verity verification failed" errors when trying to make a Nandroid backup. So I tried to reinstall TWRP recovery -- this time rather than going through Odin, I tried it with TWRP Manager (installed on device). I managed to select the wrong recovery file (SM-N910F instead of SM-N910G -- in TWRP Manager this was somewhat unlclear, as I selected the "Galaxy Note 4 INTERNATIONAL version"; my device could be considered "INTERNATIONAL version", I should have been MUCH more careful however).

What is the best course of action to take from here on? I have read a serious number of posts on XDA, but am somewhat unclear about best action to take from here on.

All help will be much appreciated: amazing Karma coming your way to all who can help get this device booting normally!



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