The following is for those who have locked bootloaders ie :- NO fast/hotboot option available
needed :-
flashtool by androxyde needed to make all this possible can be downloaded from http://androxyde.github.com/Flashtool/
flash 4.0.4.lt 15i generic fr ftf then use the kernal from the lt18i ics 4.0.3. flash only kernal so thats kernal sin loader sin only and dont wipe data or cash
full 4.0.3 lt18 562 ftf for kernal for rooting
https://docs.google.com/open?id=0B_7..ElIYlVWTEhJVDg
then i used this to root the phone ROOT ICS: Use this script:-
http://ul.to/ia1eriso
to use the script on handset goto settings developer options top option tick the check box make sure your computer has already or is installing drivers for adb etc etc click the run me inside the package once u have extracted it to somewhere on your desktop or somewhere else u put it and thats it it will restart ur fone a few times and run the root for u theres nothing else to do sept sit down for 20 seconds
Installed clockwork mod using this
https://play.google.com/store/apps/d..vy.CWMinstaler
Then i flashed this
http://downloads.androidsu.com/super..ghi-signed.zip *** THIS CAN BE SKIPPED IF WANTED ***
from
http://androidsu.com/superuser/
then back to flashtool by androxide to reflashed the 4.0.4 stock kernal remember to not wipe user data and casch and kept rooted on locked bootloader
thanks to evry 1 hear and to those who made the original packeges i made nothing i just played around with it a bit if i was helpfull pleas press thanks
tried and tested i have 2 arcs and it worked on both
I AM NOT RESPONSIBLE FOR U DAMAGING YOUR PHONE DOING THIS =) BUT IV HAD NO PROBLEM AS OF YET ***SEE NEXT POST ***
edit *** Originally Posted by codestation View Post
Nope, the 'problem' is that on 4.0.4 some apps are now located in /system/vendor/app sutch as lets golf and others thanks
Or for an easyer method try this basicly following the same thing just made easyer by http://forum.xda-developers.com/member.php?u=4562324 located http://forum.xda-developers.com/show..php?t=1683957

http://www.ptcrb.com/vendor/complete..?modelid=18648
Certified Product Detail
Below are all of the certified HW/SW versions of this product.
Manufacturer: Sony Mobile
Model #: LT15i (AAD-3880097-BV)
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.A.0.84 ECO Dec 13, 2012
A 4.1.B.1.13 ECO Dec 10, 2012
A 4.1.B.0.587 ECO Aug 8, 2012
A 4.1.B.0.431 ECO Jun 15, 2012
A 4.1.A.0.562 ECO Mar 30, 2012
A 4.0.2.A.0.69 ECO Feb 16, 2012
A 4.0.2.D.0.5 ECO Jan 27, 2012
A 4.0.2.A.0.62 ECO Dec 20, 2011
A 4.0.2.A.0.61 ECO Dec 12, 2011
A 4.0.2.D.0.4 ECO Dec 2, 2011
A 4.0.2.A.0.58 ECO Oct 21, 2011
A 4.0.2.A.0.42 ECO Oct 7, 2011
A 4.0.1.C.0.86 ECO Oct 4, 2011
A 4.0.1.A.0.283 ECO Sep 16, 2011
A 4.0.1.A.0.266 ECO Sep 6, 2011
A 4.0.A.2.377 ECO Sep 2, 2011
A 3.0.1.A.1.19 ECO Aug 29, 2011
A 4.0.A.2.371 ECO Aug 24, 2011
A 4.0.A.2.368 ECO Aug 2, 2011
A 4.0.A.2.364 ECO Jul 20, 2011
A 4.0.A.2.362 ECO Jul 19, 2011
A 3.0.1.A.0.151 ECO Jul 11, 2011
A 3.0.1.A.1.17 ECO Jul 11, 2011
A 4.0.A.2.335 ECO Jul 6, 2011
A 3.0.1.A.0.150 ECO Jun 30, 2011
A 3.0.1.A.0.148 ECO Jun 20, 2011
A 3.0.1.A.0.146 ECO Jun 20, 2011
A 3.0.1.A.0.145 ECO May 24, 2011
A 3.0.A.2.187 ECO May 17, 2011
A 3.0.J.2.3 ECO May 17, 2011
A 3.0.1.A.0.143 ECO May 13, 2011
A 3.0.1.A.0.138 ECO May 3, 2011
A 3.0.1.A.0.126 ECO Apr 28, 2011
A 3.0.A.2.184 ECO Mar 25, 2011
A 3.0.A.2.182 ECO Mar 25, 2011
A 3.0.A.2.181 ECO Mar 25, 2011
A 3.0.A.2.179 ECO Mar 25, 2011
A 3.0.A.2.170 ECO Mar 25, 2011
A 3.0.A.2.157 ECO Mar 25, 2011
A 3.0.A.2.118 ECO Mar 17, 2011
A 3.0.A.2.91 Variant Mar 15, 2011