Share your experience!
Xperia Arc S Update 4.0.2.C.0.5 (LT18i/a)
http://forum.xda-developers.com/showthread.php?t=1375243
http://www.ptcrb.com/vendor/complete/view_complete_request_guest.cfm?modelid=20152
Manufacturer:Sony EricssonModel #:LT18i (AAD-3880097-AV)Supported Technologies
and Frequency Bands:GSM: 850/900/1800/1900, UMTS FDD: Band I/Band VIII
| HW Version | SW Version | Request Type | Date Certified |
| A | 4.0.2.D.0.4 | ECO | Dec 2, 2011 |
| A | 4.0.2.C.0.5 | ECO | Nov 11, 2011 |
| A | 4.0.2.A.0.58 | ECO | Oct 21, 2011 |
| A | 4.0.2.A.0.42 | ECO | Oct 12, 2011 |
| A | 4.0.1.A.0.283 | ECO | Sep 26, 2011 |
| A | 4.0.1.A.0.266 | ECO | Sep 26, 2011 |
| A | 4.0.1.A.0.254 | Variant | Sep 26, 2011 |
Thanx to the XDA forum and adrianom
Firmware
http://forum.xda-developers.com/showthread.php?t=1375243
download FlashTool
http://forum.xda-developers.com/showthread.php?t=920746
or
http://androxyde.github.com/Flashtool/
Install it and you will see 5 folders
This is an step by step guide
Solved! Go to Solution.
But isn't that the latest North African firmware, from reading the thread? I'm looking for stock UK 
Thanks again in advance for your help uliwooly.
That's what I thought at first, but no, it is the Global Generic software 