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Samsung A3/A5/A7 2017 Root & Oreo OS upgrade Tutorial.

I found a great way of turning my Samsung A5 2017 into an A8 2018 in terms of the OS through a ported OS, as well as having root access. I found current guides somewhat confusing so I decided to write my own guide to root and install the OS. But before we start this can brick your device so make sure you make back up of all your files, contact list and data on a micro SD card and then back up those to your PC for redundancy. Again do this at your own peril however in a worst-case scenario you have to install a stock ROM and start over, something I will cover in the last part of this guide. Also, an important note bank apps tend to NOT like rooted phones, for this reason, I would advise against rooting and installing a custom OS or simply get a 2nd phone just for banking apps I am using a Samsung A3 2017 for banking apps that I left untouched and unrooted. This tutorial also works for the Samsung A3 2017 and the Samsung A7 2017 version but in this case, I am using a Samsung A5 2017 to write this tutorial.

A glossary can be found here: Samsung Galaxy devices root, recovery, and custom ROM FAQ.


Preparations:

The hardware side and enabling developer mode.

The enable developer mode procedure:

And you are done preparing to root and install a new OS to your Samsung A3/A5/A7 2017 phone. The next steps will be downloading the right software versions and utilities to root and install the Android Orea 8.0 OS. Below I will list and link all the files you need including a link to a zip file stored on my site to download all the files but for those security nuts out there I will provide a link per download so you can verify the content of each individual zip file.

Download the following files:


Now extract the Odin3 zip file on your desktop or desired folder and place the TWRP zip file in there as well, place the RMM-State Bypass Mesa v2, Magisk v18.x and HadesRom Oreo Stock v6.0 on your micro-SD card.


The next step in TWRP is to root your device using Magisk v18.x or newer. And allows for root access on your phone.

So now your device is rooted it is time to install the custom Hades ROM you can also opt to just keep your device as is and not continue with the next step of installing a custom ROM.


This should now boot into your new Oreo 8.0 OS and will prompt you to do the setup as usual. If you followed this guide to the letter anyway below I will go over the steps when you hard or soft brick your device. When you do or corrupt any files by unplugging or stopping any flashing in the above-mentioned steps you will need to install the stock ROM and start all over. The main reason why everyone says make backups, while I never had any problems this is just a cover all the basics guide.

First of all, you will need to find a stock ROM of your phone, may it be the Samsung A3/A5/A7 2017 from the correct country and provider. Sites might require you to register and the download speeds might be somewhat slow of premium membership.

After obtaining the correct or generic stock ROM you will need to unzip the files in a folder on your hard drive that can van easily find them. The next step is to open Odin3 and connect your phone via the USB cable. If your phone does not even shut down or does not respond simply let the battery drain.

This will recover any damage, unroot/unbrick and unfck your Samsung Phone. And you can opt to redo the steps above or call it a day. In any case, I hope you enjoy this tutorial and the endless possibilities an unrooted phone gives you. You can find my guide for the Samsung J6 2018 here: Samsung Galaxy J6(2018) guide to Root and Custom ROM and a general guide on using TWRP, Magisk and Odin for all Samsung Galaxy devices here: Guide to custom recovery and root on the Samsung Galaxy series.

 - Paul "HisEvilness" Ripmeester