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[ROM][A{5,7}Y17LTE][11.0] iodéOS = LineageOS 18.1 + MicroG + adblocker [18/11/2021]

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Jun 17, 2020
Our beta tester volunteers can now configure the blocking level of their iodé phones!
Feel free to join our Telegram app group (link in the news app) if you wish to become a beta tester.


New member
Jun 2, 2021
Hello, i have a question about the installation process of iodéOS on a galaxy A5 2017.
When i read the instructions, it say :
  • From TWRP => Wipe => Format Data: type 'yes'
  • From TWRP => Advanced => ADB Sideload: swipe to start sideload, and issue adb sideload <rom.zip> (the rom image can be found here)
But before Sideload the rom, dont we have to go to "advanced wipe" => select "cache" and "system" ?


Senior Member
Nov 6, 2013
This ROM basically includes everything that I set after flashing new LineageOS on any device. So it saves tons of my time. Thank you!

Just noticed one bug... During charging, there is no bolt icon (on top bar with text percentage of battery).


Senior Member
Dec 18, 2016
Hello, i have a question about the installation process of iodéOS on a galaxy A5 2017.
When i read the instructions, it say :
  • From TWRP => Wipe => Format Data: type 'yes'
  • From TWRP => Advanced => ADB Sideload: swipe to start sideload, and issue adb sideload <rom.zip> (the rom image can be found here)
But before Sideload the rom, dont we have to go to "advanced wipe" => select "cache" and "system" ?
I answer probably a bit late, but no need to wipe cache and system.


Dec 3, 2020
I love this! Thank you. Much easier to use than other ROM's. And like, seems like the fastest one. Even in fingerprint scanning.


Feb 7, 2012
Do you have a video tutorial or can recommend a similar installation video for this process? Going through the download page and reading the instructions this installation process is totally different from what I'd usually use and cant find any of the files.


Senior Member
Nov 6, 2013
After week of using I must say that battery drain is significant. Around 40% faster than LOS 17.1 official. Especially at night.


Senior Member
Dec 18, 2016
+++ New Update : 10/09/2021 +++

iodéOS 2.1 : based on Android 11 / LineageOS 18.1
Available as OTA (see OP)

BEWARE: the play store magisk module given in the OP (unofficially supported) needs to be updated *before* updgrading to iodéOS 2.0 to avoid a bootloop. You can find the updated version in the OP.


Senior Member
Nov 6, 2013
Issue with battery was related with device. After replacing new battery, everything is normal.

I'm using IodéOS almost 5 months and it is perfect for everyday use. As I mention earlier... It saves me few hours after flash with built in MicroG, F-Droid (system) and Fake Store.
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Senior Member
Nov 6, 2013
I encrypted device after fresh install on new device. Now after encryption, that was faster that I expected, I cannot boot to system. It asks for pattern, then boot with white IodéOS logo and then it reboot to TWRP. What is wrong?


Sep 21, 2009
Received new update (2.2) via OTA today.
Are there any new changes beside full blocker customization?

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    iodéOS is a privacy-focused operating system powered by LineageOS and based on the Android mobile platform. iodéOS aims at protecting the user's privacy with a built-in adblocker and by freeing the smartphone from snitches.

    The objectives in the conception of this ROM are threefold:

    1. To keep the stability and security level of LineageOS, by minimizing the modifications made to the system. Apart the system modifications required by the adblocker, we mainly only added a few useful options commonly found in other custom ROMs, made some cosmetic changes, modified a few default settings to prevent data leaks to Google servers.
    2. To ease a quick adoption of this ROM by new users. We especially target users that are concerned by the protection of their privacy, but are not reluctant to still use inquisitive apps like Google ones. We thus included MicroG as well as a coherent set of default apps (all open source, with one exception), and simplified the initial setup of the system. Particularly, an initialization of MicroG has been made with GCM notifications allowed by default, a privacy-friendly network location provider (DéjàVu) pre-selected, as well as Nominatim Geocoder.
    3. To provide a new and powerful way of blocking ads, malwares, data leaks of all kinds to many intrusive servers. We are developing an analyzer, tightly integrated into the system, that captures all DNS requests and network traffic, as well as a user interface (the iodé app). Compared to some other well-known adblockers, this has the advantages of:
      • Avoiding to lock the VPN for that use. You can even use another adblocker that uses VPN technology alongside our blocker.
      • Being independent of the kind of DNS server used by the system or set by an independent app: classical DNS on UDP port 53 or any other one, DNS over TLS (DoT), DNS over HTTPS (DoH), ..., as we capture the DNS requests before they are transmitted to the system function that emits the DNS request. What we do not support, is DoH when it is natively built into applications, i.e. when an app communicates directly with a DoH server, without asking name resolution to the system. It would require to decrypt HTTPS packets between such an app and the DoH server, which may create a big security hole.
      • Precisely mapping DNS requests and network packets to the Android apps that emitted (or received) them.
      • Deciding which apps have a filtered network usage (by default, all apps), and which ones can communicate with blacklisted servers.
      The iodé blocker is already perfectly usable, although still in its infancy. Many features are lacking, like the possibility of clearing statistics (for specific apps or all), forbidding the collection of statistics for some apps, personalizing the blacklist, etc. We are actively developing it, and new functionalities will be regularly added.


    Changes in LineageOS to prevent data leaks:
    • Default DNS server: Google's DNS replaced by Quad9's 'unblocked' servers.
    • A-GPS: supl.google.com replaced by supl.vodafone.com.
    • Captive portal login: connectivitycheck.gstatic.com replaced by captiveportal.kuketz.de for connectivity check.
    • Dialer: Google default option replaced by OpenStreetMap for phone number lookup.

    Pre-installed apps:
    • MicroG core apps: GmsCore, GsfProxy, FakeStore, maps API.
    • NLP backends for MicroG : DejaVuNLPBackend (default), MozillaNLPBackend, AppleNLPBackend, RadioCellsNLPBackend, NominatimNLPBackend.
    • App stores : FDroid (with F-Droid Privileged Extension) and Aurora Store.
    • Browser: our own fork of Firefox (with Qwant as default search engine and telemetry disabled) instead of Lineage’s default browser Jelly.
    • SMS: QKSMS instead of Lineage's default SMS app.
    • Email: p≡p (Pretty Easy Privacy)
    • Maps/navigation: Magic Earth GPS & Navigation (the only one free but not open source).
    • Keyboard: OpenBoard instead of AOSP keyboard.
    • PDF: Pdf Viewer Plus.
    • Personnal notes: Carnet.
    • {Ad/Malware/Data leak}-blocker: iodé.
    • News: to keep users informed about our developments, as well as a FAQ.
    • Meteo: Geometric Weather

    Pre-included FDroid repository:

    The apps that we tweak or develop (microG services, the browser based on Firefox, the News app, ...) are available through a repository that we included in FDroid (check the "Apps for iodéOS" category). For this purpose and to avoid name conflicts of some apps, we also had to make a few changes in FDroid.

    Useful options from other custom ROMs:
    • Smart charging (disables charging when a given level is reached, to protect battery health).
    • Fingerprint vibration toggle.
    • Swipe down to clear all in recent apps (Android 10 only).

    Installation Instructions

    To download and flash our latest build, see https://gitlab.com/iode/ota.
    You can also find here direct links to the latest builds.

    Supported devices


    Bug Reporting

    You can post a message in this thread or (preferred) open an issue here.


    LineageOS is a free, community built, aftermarket firmware distribution of android, which is designed to increase performance and reliability over stock android for your device.
    All the source code for LineageOS is available in the LineageOS Github repo. If you would like to contribute to LineageOS, please visit their Wiki for more details.
    This ROM would be nothing without the tremendous work made on MicroG, and all the other open source apps that we included. We are very grateful to their authors.


    Direct contributors: @iodeOS, @vince31fr
    Indirect contributors (too numerous to list): All the people that contributed to the device tree, to LineageOS, and to the included open source apps.


    You can help in the development of this ROM by paying us a coffee here: https://paypal.me/iodeOS.


    Downloads : iodéOS

    • 18/11/2021 (build 20211117) for A5 2017 (a5y17lte) and A7 2017 (a7y17lte):
      • LineageOS updated (November security patch)
      • Preinstalled apps updated
      • Iodé blocker: hosts can now be customized, either globally or by app
    • 10/09/2021 (build 20210828) for A5 2017 (a5y17lte) and A7 2017 (a7y17lte):
      • LineageOS updated (August security patch)
      • Preinstalled apps updated
      • Backup app included: Seedvault
      • microG now uninstallable: Settings -> Apps & notifications -> Preinstalled apps
      • New default accent color (clear blue from iodé logo)
    • 03/08/2021 (build 20210729) for A5 2017 (a5y17lte) and A7 2017 (a7y17lte):
      • Preinstalled apps UI reworked with the introduction of categories.
      • Dark theme in the iodé blocker UI (next improvement will be hosts customization).
      • p≡p (https://f-droid.org/fr/packages/security.pEp/) is now the defaut email client, and replaces lineageOS client which is no longer maintained.
      • Preinstalled apps updated to their latest version.
      • LineageOS updated (July security patch).
    • 28/05/2021 (build 20210525) for A5 2017 (a5y17lte) and A7 2017 (a7y17lte):
      • Different protection levels in iodé's blocker added: in addition to the default standard blocklist, we added three lists (socials, porn, extreme) that can be activated globally or on a per-app basis (more information in the FAQ).
      • Geometric Weather app added.
      • Preinstalled apps selection at setup wizard added.
      • Preinstalled apps including microG updated to their latest version.
      • LineageOS updated (May security patch).
    • 07/03/2021 (build 20210306) for A5 2017 (a5y17lte) and A7 2017 (a7y17lte):
      • Blocker UI improved: performance at startup, statistics display (with sortable columns), DNS stream
      • Preinstalled apps management (uninstall / reinstall) menu added (Settings -> Apps & Notifications -> Preinstalled apps)
      • Latest lineageOS sources synced
      • Default apps updated
    • 22/01/2021 (build 20210121): first publicly available build for A7 2017.
    • 21/01/2021 (build 20210120): first publicly available build for A5 2017.

    Downloads : add-ons
    • phonesky-magisk.zip : Magisk module for NanoDroid patched Play Store, for those who really need to get access to their paid apps that don't work with microG. This module can be generally be deactivated when you have installed and ran once the paid apps.
      NB : you may have to wait a couple of hours after activating the module for being able to install paid apps.
    • phonesky-magiskV2.zip : compatibility for the upcoming iodéOS 2.x based on Android 11. It can ben installed on iodéOS 1.x based on Android 10 too.
      IMPORTANT : install this module or deactivate the previous one before installing iodéOS 2.x, or you'll be caught in a bootloop.
    *** New Update : 18/11/2021 ***

    Available as OTA (see OP)
    === New Update : 03/08/2021 ===

    Available as OTA (see OP)
    ~~~ New Update : 28/05/2021 ~~~

    Available as OTA (see OP)​