Samsung Galaxy S5 Official Android 6.0 Marshmallow Update Now on Manufacturer Development Phase!

They should also enable USB debugging mode from the developer menu. There must also be a custom recovery tool like TWRP or CWM installed on the device. As has been said time and again, it is imperative that they backup any important data before going forward for the tutorial.

And then there is the requirement of having at least 70% battery life during the installation process so that there will be no interruption whatsoever.

The Android 6.0 Marshmallow-based CM13 Nightly ROM update is a relatively big update with a file size of about 286MB. It brings the usual Marshmallow OS features including the Doze power saving boot system, support for more dialects, and a new contextual assistance feature.

As for the procedure in downloading and installing the update, the first step is to reboot the Galaxy S5 into recovery mode by pressing and holding down the volume up, home and power keys until the screen flashes. After a few seconds, the phone will enter recovery mode.

Once in the recovery mode, take a Nandroid backup of the existing ROM. This is necessary to enable the user to recover the current ROM if he does not like the new ROM. In order to perform a backup, select Backup and Restore > Backup again. Go back to main recovery menu after backup is complete.

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