TWRP for Fairphone 3

[k4y0z]

@AnotherElk

Unlock the bootloader. This will also do a factory reset.

You might also be the first to try this

Not (yet) "for dummies"

https://forum.fairphone.com/t/fairphone-3-unlocking-possibly-without-factory-reset/57683

[AnotherElk]

I can understand you’re eager to get this tested, but I don’t know whether that’s such a good starting point “for dummies” .

[k4y0z]

It does unlock, it remains to be tested, if it really doesn’t require a factory reset.
But maybe you’re right, this isn’t “for dummies”, I’ll edit my post.

[samdaskod]

thanks both of you.
too bad twrp wont be like on fp2 with the updates, but i would take that. twrp was very helpful for my fp2 with the total system backup, which i dont have right now with the vanilla fp3 and if the Open OS will come for fp3 maybe it is the easiest way to install that, i guess. so i try to prepare it for that day. i have no problem with updating manually, i mostly do that anyway.
but your suggestion was not to intall it and instead unlocking bootloader and then use fastboot via a pc and boot twrp? did i get that right? so basically i use twrp on my pc for the smartphone and i can back up everything like that?

[AnotherElk]

@samdaskod

so basically i use twrp on my pc for the smartphone and i can back up everything like that?

Not quite.
You connect your phone to your PC via USB, boot the phone into Fastboot Mode, and then you execute fastboot boot twrp.img (or whatever the filename is) in a command line on the PC.
This will then boot TWRP on the phone without you having to install it. Nothing will change on the phone, as long as you keep System read-only in TWRP (important!) …

@k4y0z

Make sure you have the option “Mount system partition read-only” checked in TWRP if you want to be able to OTA.

You can then use TWRP on the phone to backup the partitions …

@k4y0z

You should generally use the respective “Image” for every partition that gives you that option.
Image will create a direct one-to-one copy of the underlying block-device.
TWRP typically doesn’t include backup-options for all possible partitions.
I have included the ones that are most likely to be modified when the device is rooted.
I have also included some partitions that contain device-specific information such as IMEI (EFS).
It is probably a good idea to backup EFS once and store it somewhere safe, but you typically should not restore it every time.
For a normal ROM Backup/Restore cycle the following partitions should suffice:

• Boot
• System Image
• Vendor Image
• Data

Here’s a little something in case you’re interested …

Used to the Fairphone 2? Don't do these Fairphone 2 things on the Fairphone 3!

It’s not uncommon that users switch over from the Fairphone 2 to the Fairphone 3. The Fairphone 3 got some things which resemble things many users know how to deal with on the Fairphone 2, examples: TWRP is available. Installing a stock version of Fairphone OS is possible (Fairphone way / community way). Custom ROMs are available, e.g. /e/, LineageOS or GSIs. The Fairphone 3 is different from the Fairphone 2, however, and so not every prior knowledge carries over well to the new device. He…

[k4y0z]

I just want to add, that if you intend to root or otherwise modify your system that will also result in OTAs failing.

[samdaskod]

oh great, thats even better, saves some space on my phone. i will read into it more. thanks for the help

[basxto]

I built a recovery image and since all those instructions and readmes were rather confusing, here is what I typed:

mkdir somefolder
cd somefolder
repo init --depth=1 -u git://github.com/minimal-manifest-twrp/platform_manifest_twrp_omni.git -b twrp-9.0
mkdir .repo/local_manifests/
tee .repo/local_manifests/FP3.xml << EOF
<?xml version="1.0" encoding="UTF-8"?>
<manifest>
<project name="chaosmaster/android_device_fairphone_fp3" path="device/fairphone/FP3" remote="github" revision="android-9.0" />
<project name="chaosmaster/android_kernel_fairphone_sdm632" path="kernel/fairphone/sdm632" remote="github" revision="twrp-9.0" />
</manifest>
EOF
repo sync

# fix all python2 scripts
mkdir ./bin
ln -s `which python2` ./bin/python
ln -s `which python2-config` ./bin/python-config
export PATH=./bin:$PATH

bash # envsetup.sh only supports bash
. build/envsetup.sh
export ALLOW_MISSING_DEPENDENCIES=true
export DTC_EXT=$PWD/prebuilts/misc/linux-x86/dtc/dtc
# will tell device not found, but still succeeds
lunch omni_fp3-eng
mka recoveryimage
fastboot boot out/target/product/FP3/recovery.img

Folder size is 30,4 GiB

[UDT121]

Sorry, I know this is a n00b set of issues and question, but how would I go about using the zip installer.

In the past I have simply directly flashed TWRP to devices. I can see there have been issues with install and I don’t want to corrupt the device.

Many thanks

[AnotherElk]

@UDT121

In the past I have simply directly flashed TWRP to devices. I can see there have been issues with install and I don’t want to corrupt the device.

Then you don’t install it, you just boot it …

@k4y0z

You can boot into twrp using fastboot boot <twrp.img>

@k4y0z

Make sure you have the option “Mount system partition read-only” checked in TWRP if you want to be able to OTA.

[UDT121]

Thanks, all sorted and installed

[Yaeghs]

Hi there,

I’m not sure I would tell this here, if I wouldn’t, please tell me, I’ll delete my message. I’ve encountered a problem rooting my phone using twpr and magisck. May anyone help me ? I’ve created a new post in order to avoid “flooding” this one, here Problem with rooting FP3

And really sorry if my ask seems to you inappropriate.

[AnotherElk]

I moved your post here.

[CosmoSteve]

Just to make sure, if I flashed your dump of A.0105 and was able to OTA to A.0110, I should stille be able to OTA, right?

I’m asking because my phone shows me that an update to A.0111 is avialable, but fails to install, but I haven’t modified my system since then.

[AlbertJP]

What you see in the screenshot is not an error message, is there a button ‘Fortfahren’ which you can click?

[CosmoSteve]

Yes I can, but it simply results in an installation error:

[AnotherElk]

@CosmoSteve

I’m asking because my phone shows me that an update to A.0111 is avialable, but fails to install, but I haven’t modified my system since then.

@k4y0z

Have you made sure the “Mount system partition read-only” is checked before you installed 110?

Make sure the option “Mount system partition read-only” in the Mount menu is checked before installing, if you want to be able to OTA later.

TWRP installable stock firmware packages for Fairphone 3

Just go to the Mount page, there is a checkbox at the bottom: [system-readonly]

After that, just flash the stock package again, this worked for me.

[CosmoSteve]

This is going to format my userdata, right?

Edit: No it doesn’t. Found out by trying.

[sm01man]

Could someone provide me with a full stock dump? The original link no longer works and I managed to trigger verity on my phone.

[AnotherElk]

@pigpig

Here is the A0111 partitions’ images.