Fairphone 3+
Version Android 12
Version e/OS 1.17
Bonsoir,
J’essaie d’installer TWRP en suivant ce tuto du forum.
Il me semble avoir suivi toutes les étapes.
L’installation bloque au niveau du writing.
Avec la commande adb reboot recovery, le menu suivant s’affiche :
Auriez-vous un conseil pour finaliser cette installation ?
Merci
i think there is no partition called “/recovery” in your FP3.
so, you will need to
also download or copy/paste the “twrp-3.7.0_9-0-FP3.img” file into the phone memory : internal storage (labelled /sdcard) or physical SDcard (labelled /external_sd) .
from the Computer, first launch :
fastboot boot twrp-3.7.0_9-0-FP3.img
reboot the device to recovery mode
then from the device, freshly booted in TWRP, using its install feature,
select /sdcard/twrp-3.7.0_9-0-FP3.img file, and point to the /boot partition
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You can boot into twrp using fastboot boot <twrp.img>
I have also included a twrp-installer zip-file that can be used to install TWRP to your device.
If you get a message, that your phone is corrupted and will shut down after 30 seconds,
you need to press the power button and the boot will continue.
You can reset the message using
adb reboot "dm-verity enforcing"
If fastboot boot fails, it is likely, because your current slot is marked as unbootable.
To reset the retry-counter, you need to set it active again using fastboot.
fastboot getvar current-slot
fastboot --set-active=<slot>
Note: When flashing full stock images, that include sbl1 or aboot, make sure both slots have a working fastboot before flashing.
And never flash both slots without first testing on one.
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Installation:
WARNING: If you accidently flash TWRP to your device using fastboot instead of temporarily booting the image, you will need to download the latest factory image for your device and reflash the boot image.
You will need the platform-tools from the Android SDK on your computer. Download the platform-tools as per your operating system.
Windows users will need proper drivers installed on their computer. You can try the simple FWUL adb/fastboot ISO or the Naked ADB drivers or the Universal ADB drivers if you don’t already have a working driver installed
Download the correct image file and copy the file into the same folder as your platform-tools as well as device’s storage. Rename the image to twrp.img.
Now reboot to fastboot/download/bootloader mode by using adb or manual key combos (Use Google to find that if you are not sure). To use adb to reboot, use the following command:
adb reboot bootloader
Temporary boot the downloaded image using the following command:
fastboot boot twrp.img
Preferred Installation Method: Once booted, navigate to the Advanced > Flash Current TWRP option. This will install the TWRP image you just booted permanently to the device.
Alternate Installation Method: Once booted, navigate to the Advanced > Install Recovery Ramdisk option. This will ask you to select the image you want to install TWRP from. Select the TWRP image you just downloaded and copied into device storage. Proceed to install this image.
NOTE: You also need to use the “Fix Recovery Bootloop” option present in the same Advanced Tab. Use that option after you have installed the recovery ramdisk successfully to avoid boot loops happening from installing TWRP Permanently.
After this is done, you have successfully installed TWRP on your device.
Je reviens tardivement sur le sujet, désolé.
L’étape 1 et 2 fonctionnent.
Problème également avec la méthode alternative " Alternate Installation Method" : en mode e-recovery/advanced, voici les options:
Que faire ??
Merci !
C’est dans TWRP que l’on attends cette option
OK, mais quand je lance “adb reboot recovery”, je ne vois pas TWRP
I think you must do this with physical button …
Avec les boutons up+power, il n’y a pas plus d’options. 
les commandes adb ne fonctionnent pas lorsque l’appareil est en mode fastboot.
Parfait, ça fonctionne enfin 
Merci @piero !!
Qu’est-ce qui fut décisif ?
