How to downgrade Nexus 7 2012 (wifi/grouper/nakasi)?

Hitanshu Gandhi  

a. Install USB drivers and platform tools from android: https://developer.android.com/sdk/index.html#Other / https://dl.google.com/android/installer_r24.4.1-windows.exe Run it, then only select platform tools and Extra/USB drivers (uncheck others) for download/installation. Note the location. Update ADB drivers via this hack (critical): http://blog.dantup.com/2012/10/fixing-adb-device-not-found-with-nexus-7-in-recovery-mode/ b. Unlock the OEM bootloader via http://www.skipsoft.net/?wpdmpro=uat-v144 SkipSoft…
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Thumbnail preview in Explorer

Hitanshu Gandhi  

Simple problem but worth isolating – my pictures folder wasn’t showing any thumbnails. Turns out there’s a setting called “Always show icons, never thumbnails” which needs to be unchecked. http://answers.microsoft.com/en-us/windows/forum/windows_7-files/thumbnail-preview-in-explorer-not-showing/222ca222-16ef-495f-88ce-79eaf55f258c?db=5&auth=1 see reply from Techbuddy1