How to update ODROID-C2 Android in slow internet.

If you select 'Check online update', You must stay this activity until to finish download.

If you close ODROID Utility, You will fail to update.

Open browser and download updatepackage-odroidc2-eng-s905_5.1.1_master-xxx.zip

http://dn.odroid.com/S905/Android/ODROID-C2/updatepackage-odroidc2-eng-s905_5.1.1_master-202.zip

Run ODROID Utility and select menu 'Package install from storage.'

 Select 'File Manager'

Select 'Download/updatepackage-odroidc2-eng-s905_5.1.1_master-xxx.zip'

Wait a second and click 'Proceed'