@dh297 Just for anyone that stumbles across this. I was actually just having the same issue, and I was using a Linux desktop with ubports-installer, and I still was getting the same exact issue as you. I did however do as Keneda suggested, and installed Android 11 (previously had Android 13). I ran ubports-installer again, and the installation worked perfectly after that. You can find an installation for Android 11 in the link below. https://support.fairphone.com/hc/en-us/articles/18896094650513-Installing-Fairphone-OS-Manually Good news is that it's actually very easy to reinstall Android 11. Your bootloader is probably already unlocked, so I think all there is to do is just download the right Android version that they give, and run the right script. I would do the Android setup on a Linux desktop though. It makes it a lot easier; rather than worrying about USB drivers and stuff. Good luck!

@randomusername Just tried typing Kernal in my FP4. When starting to type "Kernel" I get a row of suggestions. The highlighted one is the one suggested as the most likely fit for the word you are after. If I stop typing at Ke the highlighted suggestion is Keep. Add an r and the high lighted suggestion is Kernel. Try typing High and see what you get highlighted as you type. At this stage I am lost to understand how your FP4 could have been hacked by you installing UT and connecting it to the internet.

Hello @ezst036 I see the same settings as you: 16:9 8.3MP (or 4:3 12MP), and I did not find how to have a higher resolution.

@domubpkm hej thank you for your reply! I tried mitubo again it works. Before i got error codes when trying to watch or download. The last days a few things improved on my fp4! Still figuring out what changed. All in all its gotten more smoothe for sure. So thank you for reminding me to try mitubo again

@MrT10001 What if the computer does not see the device anymore?

@YomenT I had the same issue on a Oneplus 6T and found a way to manual switch audio output to USB-C (and back to speakers). Perhaps this will help? You would need to check which plughw device is USB-C https://forums.ubports.com/post/77157 (Not plug n play though)

Bluetooth on Focal a UT problem. I had this with a Pioneer digital radio. A developer told me to re-pair it several times. The theater was too weird for me which is why I uninstalled. What you can try is to delete the headphones once and pair them again. Calls were established but there was no sound and the described lost Bluetooth signal.

Yes, some like Open Camera can even use all cameras if you device has multiple. In regards to banking apps, there's no assurance they will work, it really depends on the app.

What happens to the device screen? It should display a virtual touchpad. If it does that and your external display at least detects it then that should mean it is compatible. There's a bug right now that wired external display only works once. After the initial connection, it'll just display black. You'll need to reboot to make it work again.

@s710 said in How to revert to Android?: Okay nevermind. Although the bootloader was already stating "DEVICE STATE - unlocked", and every reboot remindst of the bootloader being unlocked, I had to do fastboot flashing unlock_critical (which would ask again if I wanted to unlock the bootloader), and then the flashing tool for FF4 would run fine. Android was successfully reinstalled. Thanks for sharing! This post saved me quite some work.

@domubpkm no esim?

@carlos80 Hello and welcome. Please use English on this forum.

@MrT10001 I made progress. Now it's stuck on "deleting logical partition" for an hour : [image: 1692029706215-9a0936d1-60dd-43c9-b6ad-258d732edab4-image.png] The phone display the fastbootd screen : [image: 1692029997586-344929b3-9717-48b0-877f-41c09aa21c7c-image.png]

@gudaoxuri There's no settings to adjust the resolution yet. However, the aspect ratio should be displayed properly. Perhaps, it's a setting of your display? Though maybe it also depends on what resolutions/aspect ratio FP4 supports. I've only tried on 16:9 so not sure how it works on other aspect ratio.

@Lakotaubp I was holding the power key as well. Managed to reinstall using UBports installer, works again!