Sony Xperia X Compact (F5321) | UT extremely slow, no WiFi, no SIM

unrealb2

@drikk have you figured out how to re-install stock android rom? i'm trying to get ut on my xcompact but it keeps getting stuck on sony screen.
I was going to reinstall stock rom and try again. but i can't figure out how to. There is no official stock rom, and the ones i tried on random websites i get a file to large error.

Lakotaubp

@Flohack Can you create sub forum for the F5321 x Compact please or is that Dalton.

flohack

@lakotaubp I can do that...

flohack

https://forums.ubports.com/category/99/sony-xperia-x-compact-f5321

Lakotaubp

@flohack Thank you

drikk

@unrealb2 For Windows there is Sony's official Flash tool.

For Linux I found XperiFirm to download Sony firmware. But I didn't figure out how to flash it yet.

drikk

UPDATE
I got it fixed!

It seems to be very critical which version of Sony's OEM binaries you use:

Software binaries for AOSP Nougat (Android 7.1) – Kernel 4.4 – Loire
SW_binaries_for_Xperia_AOSP_N_MR1_5.7_r1_v08_loire.img
→ Ubuntu Touch works as expected

Software binaries for AOSP Oreo (Android 8.1) – Kernel 4.4 – Loire (v16)
SW_binaries_for_Xperia_Android_8.1.6.4_r1_v16_loire.img
→ Stuck on Sony boot screen

Software binaries for AOSP Oreo (Android 8.0) – Kernel 4.4 – Loire
SW_binaries_for_Xperia_Android_8.0.5.7_r1_v10_loire.img
→ All these issues, that I had …

The device port post mentions the first two versions as functional.
Personally I chose the 8.0 version, because it matched the installed Android version beautifully and also the installer asked for Android 8.0 being installed. Obviously I did not know, what I was doing …

Is this also true for you, @unrealb2?

Lakotaubp

@drikk Please mark as solved. Use the cog wheel (top right ) by your original post, Ask as question then mark as solved it will help other get answers quicker and well done on the fix. Enjoy.

unrealb2

@drikk Yes that is exactly what i fell into. But i figured it out as well, I had to install android 6 from sonys website.

unrealb2

@drikk Do you currently use ubuntu touch on your xperia or are you back on android? I was wondering if you fixed your slow or laggy UT because i have a nexus 7, and it also is slow. But the original android oem was also slow. So im afraid its just the hardware.

drikk

@unrealb2 I use Ubuntu Touch now.
The extreme slowness was caused by the wrong OEM binaries I used. It really was unusable then.
Now it isn't completely smooth either, but it is unproblematic and fine by me.