[Q] SD card error and Unknown Download Mode - Galaxy Note II Q&A, Help & Troubleshooting

Hello,
I've been using Note II for three months now and lately, there has been an icon appearing on the screen saying preparing SD card very often and sometimes it goes into unknown download mode without pressing anything. I have to take the battery out to shut down.
I tried formatting the SD card but it still happens.
Android version 4.1.2.

Reflash stock rom.
Sent From Samsung's Galaxy Note II Using Internet

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Cheers!
http://forum.xda-developers.com/showthread.php?t=751275
Install teh latest Kies form Samsung Firmware Website.
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My galaxy grand Duos GA-19082 has a problem
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bigbogdady said:
My galaxy grand Duos GA-19082 has a problem
It told me that there's low phone memory so I tried to empty the SD card so that I will be able to free some of the phone memory & when I put the SD card back and started the phone it stopped at the screen showing SAMSUNG logo and kept changing the colour of the SAMSUNG logo between blue & white I left it but kept like that till it emptied the battery then I tried again but the same thing I removed the SD card, battery, SIM card & reinserted them but in vain I don't know what to do can you please help me:crying::crying::crying::crying:
Click to expand...
Click to collapse
If nothing works then Reflash the Official Firmware Via Odin
jackeagle said:
If nothing works then Reflash the Official Firmware Via Odin
Click to expand...
Click to collapse
How can I do this I am new to all these things

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If u get a screen where it says press vol up to continue just do that. Using Odin flash a stock firmware. You can download stock firmware from sammobile.com.
Odin connection made! New cell back in my hands! Thank you!

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