In Android tablet terms, 2012
years is more or less the
beginning of time. Since then
Android has got more and more
complex, while your device’s hardware
remains forever stuck in the past.
Future Android updates might result in
performance improvements, but the
benefits are likely to be limited on
ageing hardware.
Reverting to an earlier version of
Android such as 4.4 (KitKat) would
speed things up considerably but the
process is difficult and, if you get it
wrong, your Nexus will be useless.
Moreover, reverting to an older Android
version means recent apps may no
longer work, and you’ll be exposed to
older security flaws. But if you’re an
adventurous sort, here’s a summary of
what to do but back up first, and
proceed at your own risk!
First, visit the Google Developer page
at bit.ly/2e0JD4G to download
the relevant Android version factory
image. Next, download and install
Android Debug Bridge (ADB) from bit.ly/2e0MwCn, then unzip
your Android factory image into the
adb-tools folder created by ADB.
On your Nexus 7, tap Settings,
then repeatedly tap Build Number
until Developer Options are enabled.
Now tap Developer Options and tick
USB Debugging.
Switch off the tablet and return to
your PC. Press Windows key+E to launch File Explorer (or Windows
Explorer), then navigate to the
adb-tools folder. Hold down Shift,
right-click abd-tools and choose
‘Open command window here’ (see
screenshot). Then, on your Nexus, hold
down both the power and volumedown
buttons for a few seconds. When
the Start screen appears, connect the
tablet to your PC via its USB cable. In
the Command window on your PC,
type fastboot oem unlock and press
Enter. On the Nexus, use the volume
keys to select Yes then press power to
confirm this unlocks the bootloader. Back in the Command window, type
fastboot reboot and press Enter.
When your Nexus reboots, select
Recovery Mode and press power to
confirm. Select ‘wipe cache partition’
then hit power, then select ‘wipe date/
factory reset’ and hit power again.
Finally, return to the adb-tools folder in
File Explorer and double-click flashall.bat:
your chosen Android factory
image will now be installed on your
Nexus. When it reboots, your Nexus
will have returned to the earlier
Android version and it should feel as
fast as it did on day one.
As for the battery, it’s just wearing
out. We’d suggest living with this but if
you want to add to the fun, it can be
replaced. The website iFixit has a good
illustrated guide, at bit.ly/2e0Nej1. You’ll be able to buy a new
battery from Amazon.
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