Develop Bugs

Bootloader locked - rom options?

Hi all,
I recently learned my arc s bootloader can not even be unlocked even by the paid methods (omnius, setool) . I have rooted it, init.d enabled, cwm on (from system).
My understanding is most of the roms are not an option for me due to locked bl.
Any ideas for roms I could still try?
Thx in advance.
Sent from my LT18i using xda app-developers app

hbguru said:
Hi all,
I recently learned my arc s bootloader can not even be unlocked even by the paid methods (omnius, setool)
Click to expand...
Click to collapse
Whys that? You can use any ROM that doesn't require you to install a custom kernel.

There are many of them you can use: Arconium, KA21, MooDeD ICS etc.

Try JJ's HYBRID ROM v3.2 Stable(here is the link: http://forum.xda-developers.com/showthread.php?t=1537717 ) It is very very good l also have a locked bootloader (unlock only paid ) It's like an AOSP ! It is rockstabel ! Or u can use modded ICS 90.5 or 90.4 but not the 90.3 it cause bootloop ! Smoot and fast but j think JJ's Hybrid is the best for Locked BL ! Try it and then you decide what good for you ! J hope j can help for you !!
Daniel D. : Arconium(Recomended Configuration
Unlocked bootloader.), KA21(=Installation instructions== KA Ice Cream Sony users ==
Important! Only for unlocked bootloader)There are ONLY for unlocked bootloader ! or jm wrong ?

Thanks
Thanks for all the answers!!
I will try JJ and arconium today
(i'm so happy there are rom's left for locked bootloader guys like me!!!! )
XperienceD said:
Whys that? You can use any ROM that doesn't require you to install a custom kernel.
Click to expand...
Click to collapse
build number:12w19 which has a new security. there is no solution yet to unlock it.

adamka13 said:
Daniel D. : Arconium(Recomended Configuration
Unlocked bootloader.), KA21(=Installation instructions== KA Ice Cream Sony users ==
Important! Only for unlocked bootloader)There are ONLY for unlocked bootloader ! or jm wrong ?
Click to expand...
Click to collapse
I tried all of them with locked bootloader.

Daniel D. said:
I tried all of them with locked bootloader.
Click to expand...
Click to collapse
Ohh.. j understand THX ! I will try it !

man jj's rom is by far the best with sony stuff plus aosp fast and the page with nice set of instructions
http://forum.xda-developers.com/showthread.php?t=1537717

I'm so exited about all the stuff I find here, but sadly I just can't root my phone. Every method does not work for me. I'd love to install these ROMS...

custom rom compatible with locked bootloader
I have an arc s with locked bootloader and hav personally used the following custom rom:
JJ Hybrid Rom 3.1 and 3.2
ThSEGA v3: ive got connectivity issue would have update to v4 but tried ka21 instead
Mooded 90.1, 90.2, 90.3, 90.5: ive encountered battery drain
XdroidPerfectv 2.3.2: got contact sync problem( i think it was solved in an update)
And following Daniel D's info.. I tried KA21 yesterday.
So far, in my opinion the best rom for a locked bootloadet is a toss between JJ and Ka21 since I like the smoothness and stability of jj's rom but missed my sony widgets, thus ka21 is a good alternative for this. Moreover, wifi connectivity in ka21 is more stable while 3G connectivity in jj is more stable although its wifi is also quite good.

Wifi depends mostly on kernel... So jj`s Rom has nothing to with your wifi issues. Secondly, what sony widgets you miss? I have JJ Rom 3.2 and found all widgests in play store, working very well.
I have atached a screenshot of my homescreen... all widgets downloaded from play store... and its more then enough for me !
My recomendation is Sirkay kernel (Xarc) with JJ`s Hybrid Rom 3.2, Baseband 70 (or you can use the BB72 from FXP thread, it works great... the other BB72 available is not so good), and most important : Do a full wipe (including /system).
On JJ`s Thread you will find also a lot of flashable addons (my fav. is nexus boot animation, xperia keyboard, hollo camera mod , and the advanced ICS+ camera with HD and panorama... but there are a lot other mods also).
So, JJ`s Rom is by far the best (and i have tried most of the available Roms).

wifi issue
Marmalux said:
Wifi depends mostly on kernel... So jj`s Rom has nothing to with your wifi issues. Secondly, what sony widgets you miss? I have JJ Rom 3.2 and found all widgests in play store, working very well.
I have atached a screenshot of my homescreen... all widgets downloaded from play store... and its more then enough for me !
My recomendation is Sirkay kernel (Xarc) with JJ`s Hybrid Rom 3.2, Baseband 70 (or you can use the BB72 from FXP thread, it works great... the other BB72 available is not so good), and most important : Do a full wipe (including /system).
On JJ`s Thread you will find also a lot of flashable addons (my fav. is nexus boot animation, xperia keyboard, hollo camera mod , and the advanced ICS+ camera with HD and panorama... but there are a lot other mods also).
So, JJ`s Rom is by far the best (and i have tried most of the available Roms).
Click to expand...
Click to collapse
I know that wifi and battery drain is a kernel issue but if you read my previous I said that I'm still with a locked bootloader so I can't change my kernel to solve my issue. The sony widget I'm talking about is the walkman player because I can only put the walkman shortcut in JJ. The sony app I've missed is the 3D Camera, track ID..(I've already changed to KA21 when JJ added the sony3D camera add on). But the gist of my post is that I'm leaning towards JJ (because of smoothness and stability) but KA21 is a good alternative (because my connection to wifi is more stable) And like you, I tried those roms i've post but keep coming back to JJ, though I'm still with KA21 as of now.
Thanks for the kernel and baseband suggestion, I'll try them once I decide to unlock my bootloader (believe me, I would really love to unlock bootloader to maximize potential of my phone but I'm still not confident in the probability of losing my sony warranty just yet:cyclops: )

Try the Ice Cream Pureness v8

noim said:
Try the Ice Cream Pureness v8
Click to expand...
Click to collapse
To me it did not work. I tried 2 times and then used Update Service And I really wanted that rom...

Super Slow Xperia Arc

Hi All,
My Xperia Arc ( LT15i) is super slow.
Its much slower than my old HTC Desire.
I have done a Factory reset and a fresh update but still slow.
I am on Android 4.0.4 and using stock Rom build 4.1.B.0.587
Please advise any workaround.
If nothing, I'll try to root it and install AOSP Jelly bean rom.
I do not care if I have Jellybean or ICS, I just want the phone to be fast.
Does the custom roms really make a big difference ?
Thanks .

There are many custom roms for xperia arc/s which are faster than ICS and GB.
They are stable/alpha/beta roms. That is your wish to decide to install which ROM.
Look at the following thread - complete guide about kernel/roms/root/guides........
http://forum.xda-developers.com/showthread.php?t=1653188
Hit "Thanks" if anyone helped you.:good:
Xperia Arc LT15i
Rooted/Bootloader Unlocked
Running Jelly Bean - FXP139/CM10

I've tried Milans ICS, it's quite fast.

timescape ui is really laggy. do vanilla android like cm9/10 or aokp will do
cm9 --- interactive governer, overclock to 1.6ghz through settings -do not use task killers, they are pointless and eats some resource away even if they do get the job done
yes 1.6ghz is safe, i have this setting for a while
although cm9/10, aokp kernel drain a more battery than stock firmware

abhayks said:
Hi All,
My Xperia Arc ( LT15i) is super slow.
Its much slower than my old HTC Desire.
I have done a Factory reset and a fresh update but still slow.
I am on Android 4.0.4 and using stock Rom build 4.1.B.0.587
Please advise any workaround.
If nothing, I'll try to root it and install AOSP Jelly bean rom.
I do not care if I have Jellybean or ICS, I just want the phone to be fast.
Does the custom roms really make a big difference ?
Thanks .
Click to expand...
Click to collapse
The custom JB roms are really fast compared to ICS.
I've also got a LT15i; here's a quick overview of the steps needed to get JB on your phone.
unlock the bootloader (there's an official sony website to talk you through this)
flash a decent baseband (use this thread http://forum.xda-developers.com/showthread.php?t=1688049).
Flash a rom of your choice - I suggest the latest AOKP from here http://forum.xda-developers.com/showthread.php?t=1859518
Things you have to know: -
How to get flashtool installed on your computer, and your computer connected to your phone.
unlocking your bootloader loses your DRM.
So my advice is read up on the stuff you need to know (if you haven't found out all this stuff already).
Then backup your SD card to your computer.
Then do the steps (1-3) to get the latest AOKP rom. This rom is officially in testing, but it is stable and fast.
Good luck.
P.S. I'm using Baseband 77, but most people recommend baseband 72.
I'm using Lupus kernel, but you should start with the kernel included in the AOKP rom.
After you are comfortable with CWM backups, you can experiment a bit more without worrying too much about data loss.
(more good luck )

bruce16878 said:
I've tried Milans ICS, it's quite fast.
Click to expand...
Click to collapse
I don't think so my friend...
I have switched from cm10 to Milan ICS for 2 day and i am dissapointed
I change because i want to use a stable rom and every functions r working great
But my decision is wrong, stock ics is the most stable but i can't play any games without lag :banghead: Ram is low and it very annoying
P/s: i miss my cm10
Hit thank button if i helped u

CM 10 with Lupus Kernel and besttt fix is rock solid.
Fast, stable (no random reboots) and everything works.
And u dont need 1,6 Ghz. 1 Ghz is enough on CM 10.

Go to arconium gb rom

Possible to root without unlocking bootloader
Thanks all for such nice advise.
I am not new to rooting, had a rooted HTC Desire for 3 years
Though, I do not want to miss on the DRM ( if it has any use ).
Is it possible to root without unlocking bootloader ?
I think it is but would be great if you nice people can advise me of the advantages and disadvantages of rooting without unlocking.
I would go with CM or AOKP.
Edit: As mentioned by ironlady, does AOKP/CM drain more battery than stock ?
Why ? I would assume that with all the extras of the stock, more batter should be consumed.
AOKP/CM are almost nearing AOSP and are no frills, why they drain more battery ?
This was my observation with HTC Desire. The HTC Sense based roms always consumed more battery than AOSP.
Thanks again.
Abhay

abhayks said:
Thanks all for such nice advise.
I am not new to rooting, had a rooted HTC Desire for 3 years
Though, I do not want to miss on the DRM ( if it has any use ).
Is it possible to root without unlocking bootloader ?
I think it is but would be great if you nice people can advise me of the advantages and disadvantages of rooting without unlocking.
I would go with CM or AOKP.
Edit: As mentioned by ironlady, does AOKP/CM drain more battery than stock ?
Why ? I would assume that with all the extras of the stock, more batter should be consumed.
AOKP/CM are almost nearing AOSP and are no frills, why they drain more battery ?
This was my observation with HTC Desire. The HTC Sense based roms always consumed more battery than AOSP.
Thanks again.
Abhay
Click to expand...
Click to collapse
Well, I don't know what DRM is for - something about "digital media rights"
(It hasn't affected playback of movies or sounds on my phone.).
It is possible to root without unlocking bootloader, but then you can't have an AOKP/CM rom.
You need the unlocked bootloader to flash the custom kernel required by these roms.
(
Flashing a kernel requires running "flashtool" from a computer. before flashing the kernel you must copy the rom to your phone's SD card.
After you flash the kernel, boot the phone and press the "volume down" button when the buttons light up.
This gets you into CWM recovery where you can flash the rom
)
I'm pretty sure that the battery drain depends on how you set up the kernel. If you over-clock, then more battery drain. If you under-clock then better battery life.
After all of this two more points of advice: -
If you try CM10, then use the Lupus kernel, and instructions posted by "besttt" to set up your phone nicely. This is a more tricky install.
If you try AOKP, then install it normally as described in the 1st post of the thread
(the custom kernel is a file called "boot.img" in the rom. You need to extract the file, and flash it with flashtool when you're ready to install the rom).
This is an easier install.
Enjoy

[Q] r800i best ROM / ROM comparison or reviews etc?

Hi XDA devs and lurkers!
I'm new to both the XDA forums and flashing Android although I've been a 'regular' Linux user since '96. I've owned Zaurii etc so I'm not scared of the terminal, compilation etc but I don't know much about Android and its various spin-off ROM/distros. I own a UK, unlocked Xperia Play r800i thats still running stock .42 which I had to factory reset over xmas as it was misbehaving and now its time to get it updated or switch ROM but I don't know if I'm best sticking with the latest stock or going with an alternate ROM?
I'm not really a gamer and the xperia pad is really just a novelty to me that I use to show off to gamers with although I think it'd be a shame if I could no longer use the pad and sneak the odd N64, PSX or MAME game in so I'd prefer that to work. What I do definitely need to work are the standard phone functions, the camera and GPS/sat nav. Apart from that I want stability, decent battery life and speed like everyone else. I was planning on sticking with GB and stock or maybe a custom stock unless there are real gains in stability or battery life to be had from updating to ICS or JB.
I've wasted a few days now trying to use SE's update service and PC companion under XP, 7 and OSX on different machines and with different USB chipsets and with different cables and it didn't work under any config! This is why I said I'd never buy another SONY product is it? Actually it was when they stole Linux from the PS3 users who took advantage of that feature, maybe even bought it especially for that but thats another story! Anyway, because of this I have not been able to download the latest stock ROM which my phone says is now up to .79 but I've read .84 is out now too?
Does anyone have a working link for a .79 (or .84) FTF file? I have only been able to find .42 and .62 stock FTFs after spending most of the day yesterday looking. Otherwise, maybe I'd be better off with a custom ROM? If so, which one and why? There are lists of r800 compat roms in both a couple of sticky threads in these XDA Xperia Play forums and on the XDA r800 wiki page but none of these lists include any notes or recommendations.
I'm hoping some kind soul will take pity on my Android n00b ass and spare me days or weeks of flashing roms and trawling these forums by answering as many of my questions as they can?
Thanks for your help!
Dan

pfmdan said:
Hi XDA devs and lurkers!
I'm new to both the XDA forums and flashing Android although I've been a 'regular' Linux user since '96. I've owned Zaurii etc so I'm not scared of the terminal, compilation etc but I don't know much about Android and its various spin-off ROM/distros. I own a UK, unlocked Xperia Play r800i thats still running stock .42 which I had to factory reset over xmas as it was misbehaving and now its time to get it updated or switch ROM but I don't know if I'm best sticking with the latest stock or going with an alternate ROM?
I'm not really a gamer and the xperia pad is really just a novelty to me that I use to show off to gamers with although I think it'd be a shame if I could no longer use the pad and sneak the odd N64, PSX or MAME game in so I'd prefer that to work. What I do definitely need to work are the standard phone functions, the camera and GPS/sat nav. Apart from that I want stability, decent battery life and speed like everyone else. I was planning on sticking with GB and stock or maybe a custom stock unless there are real gains in stability or battery life to be had from updating to ICS or JB.
I've wasted a few days now trying to use SE's update service and PC companion under XP, 7 and OSX on different machines and with different USB chipsets and with different cables and it didn't work under any config! This is why I said I'd never buy another SONY product is it? Actually it was when they stole Linux from the PS3 users who took advantage of that feature, maybe even bought it especially for that but thats another story! Anyway, because of this I have not been able to download the latest stock ROM which my phone says is now up to .79 but I've read .84 is out now too?
Does anyone have a working link for a .79 (or .84) FTF file? I have only been able to find .42 and .62 stock FTFs after spending most of the day yesterday looking. Otherwise, maybe I'd be better off with a custom ROM? If so, which one and why? There are lists of r800 compat roms in both a couple of sticky threads in these XDA Xperia Play forums and on the XDA r800 wiki page but none of these lists include any notes or recommendations.
I'm hoping some kind soul will take pity on my Android n00b ass and spare me days or weeks of flashing roms and trawling these forums by answering as many of my questions as they can?
Thanks for your help!
Dan
Click to expand...
Click to collapse
I dont have the ftf's but in your choice with ROMs, seen as u want something fast but still able to play emulators id recommend JB. ICS was ok probably CM9 & AOKP where the 2 ROMs I used. But you will need to flash farenheits touchpad fix.
Theres about 6 ROMs at the moment for JB. I use my own obviously which is PACman (mix of cm9, aokp,paranoid android and miui) but with the choice of multibooting I also have cm9 & AOKP in different slots which are accesible to boot through recovery at anytime. Also I added farenheiths touchoad fix into PACman source so no need to flash anything to fix it.
Choice is yours at the end of the day, but I find JB alot faster / smoother then ICS.
Sent from my GT-I9300 On Official JB

I use this one: http://forum.xda-developers.com/showthread.php?t=1854682
Is the best ICS ROM that I ever try. But yes, JB is faster than ICS.

Thanks wedgess and nikiticos for your suggestions!
Last time I was looking into roms for my xperia the consensus seemed to be to avoid ICS or JB if you wanted a stable and fully working phone but it sounds like times have changed and its good to hear that my joypad should work under JB!
I like the sound of your rom wedgess so I hope to try that soon. I don't see any real reason to try any ICS roms but I'd still like some links to the latest stock ftfs and it'd be good to know what the best stock based rom is too as thats another thing I'd like to try. From these two responses though its sounding like there isn't much interest in GB roms any more?

pfmdan said:
Thanks wedgess and nikiticos for your suggestions!
Last time I was looking into roms for my xperia the consensus seemed to be to avoid ICS or JB if you wanted a stable and fully working phone but it sounds like times have changed and its good to hear that my joypad should work under JB!
I like the sound of your rom wedgess so I hope to try that soon. I don't see any real reason to try any ICS roms but I'd still like some links to the latest stock ftfs and it'd be good to know what the best stock based rom is too as thats another thing I'd like to try. From these two responses though its sounding like there isn't much interest in GB roms any more?
Click to expand...
Click to collapse
Ye JB was very unstable back when it first came out. But I got camera working,CosmicDan got proximity sensors fixed and Farenheits touchpad fix so it all became better. Personally I stay away from ICS due to the fact of it been a RAM hogger. JB seems to deal with it alot better.
For both my own JB kernel and CosmicDans JB kernel you will need to flash the ftf in our kernel threads OP. Reason being they both use custom partitions which give 610mb in internal storage. In this ftf vendor partitions are unlocked. In other ftfs partitions are locked beside the r800x.
Id say try them out. Maybe take advantage of the multiboot feature which will alow u to boot between JB and ICS (cm9 based roms only). I havent used it personally but if I was to go back to ICS it would be either Sechkos port of ICS pureness or CosmicDans MIUI australia.
Sent from my GT-I9300 On Official JB

wedgess said:
Ye JB was very unstable back when it first came out. But I got camera working,CosmicDan got proximity sensors fixed and Farenheits touchpad fix so it all became better. Personally I stay away from ICS due to the fact of it been a RAM hogger. JB seems to deal with it alot better.
For both my own JB kernel and CosmicDans JB kernel you will need to flash the ftf in our kernel threads OP. Reason being they both use custom partitions which give 610mb in internal storage. In this ftf vendor partitions are unlocked. In other ftfs partitions are locked beside the r800x.
Id say try them out. Maybe take advantage of the multiboot feature which will alow u to boot between JB and ICS (cm9 based roms only). I havent used it personally but if I was to go back to ICS it would be either Sechkos port of ICS pureness or CosmicDans MIUI australia.
Sent from my GT-I9300 On Official JB
Click to expand...
Click to collapse
Is for the stability that im not using JB. The Stock based ROM that I mention later is the best that you can get with ICS. I'm using it with Lupus Kernel and overclocked to 1.2 (min 460) and also I erase many stuff with Link2SD because there are many garbage you really don't need. And I've got a great experience with this ROM. Give a try if you want, I recommend it.

DL?
Hi wedgess!
I'd like to have my first go at using flashtool tonight to flash your ROM but where do I download it?
This thread:
http://forum.xda-developers.com/showthread.php?t=1628197
Doesn't even list JB roms such as yours.

You can find any of my work by clicking on my profile -> statistics -> Find all threads started by wedgess
But to make it easier for you
- PACman ROM v5 thread here
You will need to flash this stock ftf first to use the kernels as they have vendor unlocked partitions
Theres also a link in PAC thread to LuPuS-v7 kernel, if you want to read up a bit on multiboot(recommended) or there is this great guide by fma
Put the PAC-v5.zip onto sdcard. LuPuS-v7 is inside the PAC ROM's .zip just extract the kernel.img from the PAC-v5.zip and flash the kernel.img in flashtool via fastboot mode.

[Q] Frequent game restarts/pauses

As explained in the title, my Xperia Arc either pauses or restarts every 30 seconds or so while playing games, especially high memory games like Clash of Clans, Zenonia and etc. Not particularly a tech savvy guy so I might need professional step-by-step guidance on what to do here.

Have you overclocked your phone?
What ROM/kernel are you using?

Someguyfromhell said:
Have you overclocked your phone?
What ROM/kernel are you using?
Click to expand...
Click to collapse
No, I haven't overclocked my phone. Currently not using any custom rom but basic ICS version 4.0.4. Kernel version shows 2.6.32.9-perf on phone. By the way this problem happens only when i play games, other applications like Facebook works just fine.

SoneChin said:
No, I haven't overclocked my phone. Currently not using any custom rom but basic ICS version 4.0.4. Kernel version shows 2.6.32.9-perf on phone. By the way this problem happens only when i play games, other applications like Facebook works just fine.
Click to expand...
Click to collapse
Stock ICS for Xperia 2011 isn't optimized for heavy use (small amount of RAM) and got outdated Adreno drivers. Custom ROMs / AOSP / CM + custom kernel will take care of this by using various performance specific tweaks.

SoneChin said:
No, I haven't overclocked my phone. Currently not using any custom rom but basic ICS version 4.0.4. Kernel version shows 2.6.32.9-perf on phone. By the way this problem happens only when i play games, other applications like Facebook works just fine.
Click to expand...
Click to collapse
If most of you here don't know, ICS is not recommended for gaming. Switch to a GB or JB ROM if you want to use your phone for gaming.
僕のLT18iから送られてきた

I see... Actually I once used custom ROM before but games are still kinda laggy. Is it recommended that I downgrade my Android version to GB?
EDIT:
If most of you here don't know, ICS is not recommended for gaming. Switch to a GB or JB ROM if you want to use your phone for gaming.
Click to expand...
Click to collapse
Thanks for the advice, I shall try it out. If problem persists, welp, it's time to buy a new phone.

SoneChin said:
I see... Actually I once used custom ROM before but games are still kinda laggy. Is it recommended that I downgrade my Android version to GB?
EDIT:
Thanks for the advice, I shall try it out. If problem persists, welp, it's time to buy a new phone.
Click to expand...
Click to collapse
There is a great ROM i'm using it's called gin2jellybean it has jb look but it's gb rom it's very fast and it's great with games.try it
Sent from my Xperia Arc LT15i using XDA

[POLL] How Many KitKat Users Are Here?

He Guys, After KitKat Released Now All I See In Xperia Arc/s Apps & Themes Section It KitKAt ROM And KK Apps ...
No One Is Modding Anything Like Old Times Or What Now? I Wonder How Many Of You Are Currenty Using KK ?
All I Know Is It's Can't Be Lighting Fast & Cool ROM... Cos Xperia Arc Has Low End Hardware How It can Run KK Smoothly?! >
When If YOu Install Latest Facebook It's Complate Lagdroid...... But It Works Cool On ICS Without Overloaded Apps + Datas & Updates...
I Just Wonder How Many KK Users Are Here or why you are using it? (I Want KK Aslo Just because to run lates KK walkman app, nothing more)

gius321 said:
He Guys, After KitKat Released Now All I See In Xperia Arc/s Apps & Themes Section It KitKAt ROM And KK Apps ...
No One Is Modding Anything Like Old Times Or What Now? I Wonder How Many Of You Are Currenty Using KK ?
All I Know Is It's Can't Be Lighting Fast & Cool ROM... Cos Xperia Arc Has Low End Hardware How It can Run KK Smoothly?! >
When If YOu Install Latest Facebook It's Complate Lagdroid...... But It Works Cool On ICS Without Overloaded Apps + Datas & Updates...
I Just Wonder How Many KK Users Are Here or why you are using it? (I Want KK Aslo Just because to run lates KK walkman app, nothing more)
Click to expand...
Click to collapse
to answer some stuff quick:
-KK is a hell lot faster than ANY ics rom with & without apps on it. maybe currently its a bit sluggish but thats because ION is in ACTIVE development. but its getting better & better every update. for latest version of LX im really amazed. if you know that ''It's Can't Be Lighting Fast & Cool ROM'' you know nothing about KK experience & bro KK is even optimized for low end HW. your sentence is wrong. KK runs a lot faster & stabler than stock ICS!!!! the thing is that some drivers are not meant for KK & make some things not work superb like wifi. i have much app installed & phone still super fast. i dont use fackbook & i guess its fb fault that phone become laggy. (fb works good on ICS?? did you making jokes?? )
you should try KK instead just only talking about it. i think u have no idea (what u talking about ) also use some good rom like LX, to many half baked roms out there
- dev porting apps mostly to their systems using. mostly they use the newest.
- sony apps porting to same os KK apps port to KK is MUCH easier than to JB (very hard many code changed / missing in JB)
try KK bro & report me bak

Thanks For The Right Answer..
hi there bro... thanks for useful reply... i don't have much experience in KK roms... i will definitely try it later... so what rom do you use?
Legacy Xperia 443? >>> http://forum.xda-developers.com/showthread.php?t=2545354
is that optimized rom? i just can't imagine how KK can be better then ICS... maybe it's really optimized for 2011 xperias...

gius321 said:
hi there bro... thanks for useful reply... i don't have much experience in KK roms... i will definitely try it later... so what rom do you use?
Legacy Xperia 443? >>> http://forum.xda-developers.com/showthread.php?t=2545354
is that optimized rom? i just can't imagine how KK can be better then ICS... maybe it's really optimized for 2011 xperias...
Click to expand...
Click to collapse
KK (aswell as JB) is better because it uses the new 3.4 kernel. this is a power pack. ICS still rocks stoneage 2.6.2xx kernel.also its CM based which is hold close to stock android = more power for you. one of kitkats pros was project sveltje which wanted to make sure that the latest OS of android even run smooth on low end device (512 mb ram) it also benefits our devices.
personally i use latest LX 4.4.3 rom (with sony home, media apps & sliglthy sony style framework by me) because its keeped clean & its updated frequently (not abdonned after 2 builds ) but the newest versions (after 19/3 build) are all ION based & with hints . some bugs here & there, new bugs comming (because of active development) if you want just check out kitkat, use the 19/3 build as it is the last PMEM one & gives most stability in kitkat on our device.
if you just want to upgrade your rom to use it as daily driver & dont care to allways have the neewest, then use CM10.1 (also LX) will give you best mix of speed from new kernel & its the most stable of all JB roms for our devices.
just to mention in coparsion to ICS: battery will get down faster & wifi isnt perfect (i have no problems). also camera is much better on ICS. (mostly due to lack of proper drivers.)
take 2 hrs time, do a backup of current rom (recovery), the flash LX kernel ROM & gapps of choice. N# experiece yourself. im really amazed how far our phones got . in case you dont like you can just flash old kernel & restore backup (or go to stockkernel via falshing stock ICS ftf via flashtool, then install xparts, install CWM --> restore backup)
dont forget to follow LX install instruction EXACTLY good luck

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@gius321
I know you're no newbie.
It pains me to see that you've not tried out any kitkat ROMs all this while.
May I suggest a particular ROM.
C-Rom version 5.6 KitKat 4.4.2
Try it.You will like it.
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