[Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A] M66B:
The extended ROM/kernel is the same as the FXP ROM/nAa kernel with some changes/additions/fixes.

Just handle it as you would handle a new FXP release. Mostly there is no need to wipe anything.

Kernel features

Based on nAa kernel 2.6.32.60

Built with Linaro

Optional 4 digit pincode at startup

Autogroup enabled

Tuned SmartassV2/H3

Extended Wi-Fi range

Default CPU govenor: SmartsassV2

Default I/O scheduler: SIO

CWM CM10.1

Increased volume

Increased LCD backlight

Fixed device serial number

ROM features

Added CellBroadcastReceiver (for NL-Alert or similar)

Fixed mobile data timeout

OpenPDroid (PDroid Manager integrated and network location fixed) (not in latest releases anymore, you can use XPrivacy)

Fixed nano editor

Full terminfo

Fixed empty notification drawer

Mass storage mode

Extended settings: Smartassv2/h3, CPU voltage, low memory killer, autogroup, fsync, boot pincode

Wi-Fi auto connect settings

Electron beam animation

sftp server

Layout fixes

Finer music volume

Display driver fixes

SmartassV2/H3 boost pulse

Update notification from goo.im

Disabled Google Analytics for CM (privacy)

iw binary built from source

MMS FC fixes

Trebuchet+ from CM10.1 (thanks [MENTION=4449659]gandhar[/MENTION])

DeskClock from CM10.1 (thanks [MENTION=4449659]gandhar[/MENTION])

koush Superuser

busybox from CM10.1

CMFileManager from CM10.1

Apollo from CM10.1 (thanks [MENTION=4449659]gandhar[/MENTION])

APN's from CM10.1

Calendar CM10.1 (thanks [MENTION=4449659]gandhar[/MENTION])

Plus all things merged into CM10 and merged into the nAa kernel.

Read here for how to get updates from goo.im or download here from goo.im.

Please sign the petition 'JB camera libs for all Sony Xperia 2011 phones'.

I will support the ROM/kernel as longs as I have working SE devices.

Frequently Asked Questions

Will you make a CM10.1 kernel/ROM (Android 4.2.x) ? No, read here why.

The compass is spinning randomly in Google Maps. This is a bug in Google Maps that only Google can fix. It is possible to use an old version without this problem.

Wi-Fi hotspot doesn't completely turn off, will you fix it? No, see here for a workaround.

What is working and what is not working? See here for a list.

Why is 720p video recording disabled? See here for an explanation.

Why don't you include TWRP anymore? Mainly because backup doesn't work properly and because there are too many problems, which will probably not be fixed because Xperia 2011 devices are not supported.

Can you explain how SmartassV2 boost support works? Yes, see here.

The clock force closes, what can I do? See here.

Which automatic backlight settings do work? See here.

See here for more frequently asked questions.

Known bugs

"GPS is causing the darin problem" (report) Solution here.

"The click-sound is not synchronous with the screen-shutdown-animation" (report)

"front camera on other apps like gtalk or face unlock" (report)

"i don't see "call waiting" message" (report)

Feature requests, bug reports, comments, etc are welcome.

Off-topic is in the spirit of helping each other allowed in this thread.

Maybe it is a good idea to discuss derived works here too, since most stuff will be common.

There is no permission needed to use my work, but letting me know you did use my work is appreciated (maybe I can learn something from it).

It is not very difficult to build the kernel and/or ROM yourself with the provided script, see here for details.

The script can be used for other SE 2011 devices too. If you get stuck somewhere, I will try to help you.

Please share your own patches, if you have any (you can do a pull request).

Use at your own risk !

(thanks Steph310 for all the pictures!)