Xperia X10 - Android 10 -> Downgrade to 9 neccessary?


just happy to purchased a X10 and a licencse, now I really want to get it started but running into the Android 10 problematic, of course, my used bought device is already on Android 10.

In the guide is written that it is ‘your phone should run Android 9’, so there is a possibility that it also works flawless if Android 10 is already running?

As I could not found a trustable image download for Android 10 on the known sources Xperia Downloader (all 10’ers), XDA Board, 4PDA, I would like to know if it is really necessary to downgrade to Android 9.

Thanks for a fast reply and/or a mirror link for some EU image.

Best wishes Kalipus

FWIW, I recalled that this (first post) suggests that Android 10 would not work out well, unfortunately.
Hopefully, further info on your whole query will be forthcoming.

edit: also a Zendesk page confirms (in)compatibility:

I am just searching a link for a firmware image, do you have one?

I don’t, sorry - just posted above to maybe avoid another phone bricking! That said…

With the disclaimer that I am pretty much an idiot by standards of this forum, I could tip you that my copy of Xperifirm brings up some fsc for the X10 - take that as you will.
I’m sorry this isn’t the cleanest start for you so far - feeling your pain as I took the whole DirtyCow DRM side route as well (X, not X10 tho). Tough times.

I realise for you, the Android downgrading is a pre-condition for Sailfish X installation (arguably, more official help could be provided with that), but with things as they are, maybe the Android ROM side of things is better covered by e.g. here?

no problem, i also just registered and have no idea about specific rules here.
Currently not in the mood and no time for reading through pages of peoples issues, I just need that image and then I find my way, not my first phone which I will root and put some new image on it, doing this for 8 years…

@JSEHV There should really be the images for the phones somewhere and linked on the guide, if this is a must-have condition that Android 9 is running.

1 Like

First ran into problems using Flashtool with Xperia 10 I3113 as there is only an .fsc for I4113 Dual Sim in devices database hence had to use NewFlasher, which is the way to go for newer devices.

1 Like

Is this a joke??

I bought a licence, i want now to install this OS and use the software, GIVE ME A SOLUTION

You can get the stock firmware from here:
You need a special flash tool for downgrading though. See instructions here: