Installing Murena e/OS on a (Google) Fairphone 3+

[Inne]

Dear community members,

Sorry for being a newbie and possibly asking a annoying question, but I have been trying to solve this myself and haven’t been succesful.

I’ve got a Fairphone 3+ and will need to abandon it in August. Then I will buy a Fairphone 6 e/OS Murena. But in the meantime, I was thinking of getting to know Murena on my backup Fairphone 3+. I already got it to factory settings, but when I start it, it asks for a Google account, and after giving it, it stalls “verify account“-error. I can not get past that. It must be something very stupid I’m missing.

Any help or advice?

Inne ten Have (Rotterdam, NL)

[yvmuell]

A safe guide to install /e/OS on your Fairphone

[e] because even well illustrated, the “web-installer” often don’t work, and because the install instructions provided by /e/ can be imbuvable for some new users and can lead to errors. Here is a safe guide to install /e/OS we will take the Fairphone 6 as example, . Expand to see the guide : . Feel free to ask if you still encountred issue. or want i made some corrections / additions you may also be interested by : A clear guide to Upgrade your /e/OS to a new Android major version wit…

[piero-e]

Hello @Inne, Welcome to the Fairphone users forum.

@Inne

Any help or advice?

@piero-e

Things you must take care about

Warning: Before proceeding with the installation, log out of any accounts you may have set on the stock ROM. Also, remove any screen locks that have been set on the device.

android 13 based /e/OS official FP3 download

android 15 based /e/OS community FP3 download

Install /e/OS on a Fairphone FP3/3+ - “FP3”

[urs_lesse]

Some guesswork sparked by this bit:

@Inne

I was thinking of getting to know Murena on my backup Fairphone 3+. I already got it to factory settings, but when I start it, it asks for a Google account, and after giving it, it stalls “verify account“-error.

If you never logged in on this backup FP3+ with your own Google account, then it is probably still tied to the previous owner of your backup FP3+ who apparently did not unregister her or his Google account before selling the FP3+ to you. Most likely that Google account holder is the only one who can unblock it then.

Three ideas following from that:

1. The previous owner of your backup FP3+ unblocks it for you. From my experience, this usually does not materialize, but it is up to you if you want to contact the seller again and ask.
2. Check if the current backup FP3+ is on the latest version of Fairphone OS. Fairphone introduced a simplified bootloader unlocking on the FP3 with the mid-March (2026) Software Update: FP3.6.A.040.2 📲 As I am not using Fairphone OS myself, I do not know exactly what changed to bootloader unlocking, so I cannot know if this would help you overcoming the Google account blockade on your backup FP3+. But it cannot hurt if you check the Fairphone OS version on it and update it to the most recent version (if it is on an older one).
3. Alternatively: Consider if you are willing to switch the “roles” of your two FP3s – make your current primary FP3 the backup one and the backup one the primary one. Your current primary FP3 should allow the change to Murena’s /e/OS if you unregister your own Google account from it.

If any of that is successful, my own experience with switching a Fairphone OS FP3 to /e/OS using Murena’s web installer at /e/OS Installer last year was very good.

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For others reading along, I got contacted in private and that message included some more info (the backup phone is a second hand one). The discussion should continue here now.