[LG Optimus 4X HD] L2Deliver:
Jellybean update V20A was made available, unofficially, on 05 March 2013.

V20B HK & CN was leaked on 28 March 2013

V20A EuroOpen NEU was officially released on 4th April 2013

DL: http://csmgdl.lgmobile.com/swdata/WDLSW/LGP880/ANEUBK/V20a_00/V20A_00.kdz

Several download links and flashing methods are floating around if you search them so im not posting ANY here.

This thread is to compile user experienced changes to various firmware upgrades, for record.

Please add comments and specify if there's anything new and i'll update this post asap. Please post with your ROM version and localisation.

____________________________________________________________________________________________

Leaked V20B HK - Confirmation required for Official V20B

kernel 3.1.10

Off now an option in stock camera shutter sound

Removed rotatable Home screen function

RemovedIncreased heat protection activation temperature while charging.

No

QSlide (QSlide Framework app is present. Available in the future maybe?)

USB OTG

Antutu: 13167

Bear in mind this is an unofficial leak.

____________________________________________________________________________________________

Leaked V20A - Also Applies to Official Euro Open V20A

Kernel 3.1.10

[LIST]
[*][URL="http://en.wikipedia.org/wiki/Android_version_history#Android_4.1_Jelly_Bean_.28API_level_16.29"]Usual JB updates[/URL]
[*]Interactive notification
[*][B]User Interface[/B]
[LIST]
[*]Overall more responsive user interface
[*]Screen brightness control in notification drawer
[*]Rotatable homescreen, App drawer, Stock Dialler
[*]Editable App drawer background.
[*]Additional Option to sort app according to alphabetical order or install date. Reset still in place but will sort apps into System/user app & reset app drawer wallpaper - Thanks Monskiller
[*]Pinching OUT in homescreen to display blank homescreens (available in ICS)
[*]New Lockscreen shortcut design, no water drop unlock effect
[*]Option to vary lockscreen implementation after screen timeout. Option to toggle whether power button locks immediately.
[*]GPRS/EDGE/HSDPA connection now appears as a separate icon - Thanks TechnoBraker
[*]Able to view notification bar from most full screen application ie Games by swiping in from the top - Thanks mirujack41
[/LIST]
[*][B]Gallery[/B]
[LIST]
[*]Support thumbnail resizing from 2 column to 5 columns by pinching
[*]When viewing pictures pinch in to enter filmstrip view, then swipe up to delete photos
[/LIST]
[*][B]Camera App[/B]
[LIST]
[*]Better focusing performance in photo/video
[*]Customisable shortcut keys
[*]Increased image quality
[*]Autofocus in video recording now works properly
[*]No shutter sound only if phone is in silent mode. - Thanks teddyxfire
[*][URL="http://xdaforums.com/showthread.php?t=2182850"]4.2 camera now works[/URL]
[*][B]Official ESA V20A[/B] - Off an option for shutter sound. - Thanks kennchie00
[/LIST]
[*][B]Messaging App[/B]
[LIST]
[*]Various preset theme for all conversations
[*]Small pop-up under notification bar showing newly received messages' contents - Thanks Monskiller
[*]Option to repeat notification every 2 minutes - thanks hpnxfox
[*]Option to hide message contents from displaying (Pop-up & Noti Bar) - Thanks TechnoBraker
[/LIST]
[*][B]Music App[/B]
[LIST]
[*]Option to disable music playback controls from appearing in Notification Bar - Thanks Monskiller
[/LIST]
[*][B]Phone App[/B]
[LIST]
[*]Customizable tabs in Phone App - Thanks TechnoBraker
[/LIST]
[*][B]New additions[/B]
[LIST]
[*]New weather app from Accuweather
[*]New Task manager widget
[*]New stock app delivery app (LG Tag+ , stock File Manager)
[*]Additional NFC option to turn off Android Beam whilst using NFC.
[*]]GLONASS support
[*][B]Official ESA/INDIA V20A[/B] - Added Play Music App - Thanks TechnoBraker
[/LIST]
[*][B]Removal[/B]
[LIST]
[*]FM radio now has RDS station ID in V20A, reception also a bit better. - Thanks button04
[*]Removed Yahoo! apps
[*]Removed Social+
[*]Power control widgets removed - Thanks [URL="http://xdaforums.com/showpost.php?p=40206769&postcount=174"]mirujack41[/URL]
[*]LG Gearbox doesn't work anymore
[/LIST]
[*]Updated keyboard
[*]Updated Recent App screen (button to clear the screen)
[*]Brightness limitation to limit heat
[*]Louder earphone
[*]Front Key Light do not light up anymore if you tap/touch the screen, only if you touch the actual keys. - Thanks Monskiller
[*]Warning Technical stuff;) - Change in the lowmemkiller:
ICS: minfree: 2048,4096,8192,16384,24576,32768
JB: minfree: 14745,18432,22118,25804,29491,36864
- Thanks [URL="http://xdaforums.com/showpost.php?p=40077617&postcount=161"]laufersteppenwolf[/URL]
[*][B]Additional Notes from Official Release Statement[/B] - (thanks [URL="http://xdaforums.com/showpost.php?p=40083402&postcount=12"]peppethustra[/URL], [URL="http://xdaforums.com/showpost.php?p=40105898&postcount=163"]intl[/URL])
[LIST]
[*]Unlocked Bootloader
[*]New feature in the Application Link Up
[*]New Zooming function Screen to use the pinch-to-zoom in the SMS, in the previews of the gallery, email, address book and in the SMS
[*]Updated and / or removed some widgets in line with the Optimus 3.0 interface of 2013
[*]Removed the LG Tag +. It can be downloaded via "Application Management"
[*]Apply the latest security Google patches
[*]Updated the Google Mobile Suite applications and the basic applications of the smartphone
[*]Added the indicator for autofocus on the camera
[*]USB audio (use the micro USB connection to send media to a speakerdock) (AOA protocol)
[*]Alarm application with link (start immeditely an application when the alarm goes off)
[*]New functions in Quick Memo
[/LIST]
[/LIST]

No
[LIST]
[*]QSlide (QSlide Framework app is present. Available in the future maybe?)
[*]USB OTG
[/LIST]

____________________________________________________________________________________________

Frequent Question and Answers

IF YOU ENCOUNTER LOW CHARGE CURRENT ISSUE - To disable it

It is not a bug with JB.1.2 update. This feature was already present in ICS F/Ws.

The reason for this is to prevent your phone from overheating (your phone gets warm during charge fyi) when there was already heat present (ie After playing games, watching youtube, long web surfing, moderate - intensive usage, etc). Low current will prevent additional heat from building up.

Re-inserting your battery may or may not help depending on how much heat was there. To 'fix' this restart your phone and charge after around 2-3 minutes.

Please add comments and specify if there's anything new and i'll update this post asap, for every new offical F/W updates.

Post source code. Anyone feeling better to take over the task please use the compiled list to continue:

Jellybean update V20A was made available, unofficially, on 05 March 2013.
V20B HK & CN was leaked on 28 March 2013
V20A EuroOpen NEU was officially released on 4th April 2013
DL: [url]http://csmgdl.lgmobile.com/swdata/WDLSW/LGP880/ANEUBK/V20a_00/V20A_00.kdz[/url]

Several download links and flashing methods are floating around if you search them so im not posting ANY here.

[SIZE="4"][B]This thread is to compile user experienced changes to various firmware upgrades, for record.

Please add comments and specify if there's anything new and i'll update this post asap. [COLOR="DimGray"]Please post with your ROM version and localisation.[/COLOR][/B][/SIZE]

____________________________________________________________________________________________
[B]Leaked V20B HK[/B] - Confirmation required for Official V20B
kernel 3.1.10
[LIST]
[*]Off now an option in stock camera shutter sound
[*]Removed rotatable Home screen function
[*][Strike]Removed[/strike]Increased heat protection activation temperature while charging.
[/LIST]

No
[LIST]
[*]QSlide (QSlide Framework app is present. Available in the future maybe?)
[*]USB OTG
[/LIST]

Antutu: 13167

[B]Bear in mind this is an unofficial leak.[/B]
____________________________________________________________________________________________
[B]Leaked V20A[/B] - Also Applies to Official Euro Open V20A
Kernel 3.1.10
[CODE][LIST]
[*][URL="http://en.wikipedia.org/wiki/Android_version_history#Android_4.1_Jelly_Bean_.28API_level_16.29"]Usual JB updates[/URL]
[*]Interactive notification
[*][B]User Interface[/B]
[LIST]
[*]Overall more responsive user interface
[*]Screen brightness control in notification drawer
[*]Rotatable homescreen, App drawer, Stock Dialler
[*]Editable App drawer background.
[*]Additional Option to sort app according to alphabetical order or install date. Reset still in place but will sort apps into System/user app & reset app drawer wallpaper - Thanks Monskiller
[*]Pinching OUT in homescreen to display blank homescreens (available in ICS)
[*]New Lockscreen shortcut design, no water drop unlock effect
[*]Option to vary lockscreen implementation after screen timeout. Option to toggle whether power button locks immediately.
[*]GPRS/EDGE/HSDPA connection now appears as a separate icon - Thanks TechnoBraker
[*]Able to view notification bar from most full screen application ie Games by swiping in from the top - Thanks mirujack41
[/LIST]
[*][B]Gallery[/B]
[LIST]
[*]Support thumbnail resizing from 2 column to 5 columns by pinching
[*]When viewing pictures pinch in to enter filmstrip view, then swipe up to delete photos
[/LIST]
[*][B]Camera App[/B]
[LIST]
[*]Better focusing performance in photo/video
[*]Customisable shortcut keys
[*]Increased image quality
[*]Autofocus in video recording now works properly
[*]No shutter sound only if phone is in silent mode. - Thanks teddyxfire
[*][URL="http://xdaforums.com/showthread.php?t=2182850"]4.2 camera now works[/URL]
[*][B]Official ESA V20A[/B] - Off an option for shutter sound. - Thanks kennchie00
[/LIST]
[*][B]Messaging App[/B]
[LIST]
[*]Various preset theme for all conversations
[*]Small pop-up under notification bar showing newly received messages' contents - Thanks Monskiller
[*]Option to repeat notification every 2 minutes - thanks hpnxfox
[*]Option to hide message contents from displaying (Pop-up & Noti Bar) - Thanks TechnoBraker
[/LIST]
[*][B]Music App[/B]
[LIST]
[*]Option to disable music playback controls from appearing in Notification Bar - Thanks Monskiller
[/LIST]
[*][B]Phone App[/B]
[LIST]
[*]Customizable tabs in Phone App - Thanks TechnoBraker
[/LIST]
[*][B]New additions[/B]
[LIST]
[*]New weather app from Accuweather
[*]New Task manager widget
[*]New stock app delivery app (LG Tag+ , stock File Manager)
[*]Additional NFC option to turn off Android Beam whilst using NFC.
[*]]GLONASS support
[*][B]Official ESA/INDIA V20A[/B] - Added Play Music App - Thanks TechnoBraker
[/LIST]
[*][B]Removal[/B]
[LIST]
[*]FM radio now has RDS station ID in V20A, reception also a bit better. - Thanks button04
[*]Removed Yahoo! apps
[*]Removed Social+
[*]Power control widgets removed - Thanks [URL="http://xdaforums.com/showpost.php?p=40206769&postcount=174"]mirujack41[/URL]
[*]LG Gearbox doesn't work anymore
[/LIST]
[*]Updated keyboard
[*]Updated Recent App screen (button to clear the screen)
[*]Brightness limitation to limit heat
[*]Louder earphone
[*]Front Key Light do not light up anymore if you tap/touch the screen, only if you touch the actual keys. - Thanks Monskiller
[*]Warning Technical stuff;) - Change in the lowmemkiller:
ICS: minfree: 2048,4096,8192,16384,24576,32768
JB: minfree: 14745,18432,22118,25804,29491,36864
- Thanks [URL="http://xdaforums.com/showpost.php?p=40077617&postcount=161"]laufersteppenwolf[/URL]
[*][B]Additional Notes from Official Release Statement[/B] - (thanks [URL="http://xdaforums.com/showpost.php?p=40083402&postcount=12"]peppethustra[/URL], [URL="http://xdaforums.com/showpost.php?p=40105898&postcount=163"]intl[/URL])
[LIST]
[*]Unlocked Bootloader
[*]New feature in the Application Link Up
[*]New Zooming function Screen to use the pinch-to-zoom in the SMS, in the previews of the gallery, email, address book and in the SMS
[*]Updated and / or removed some widgets in line with the Optimus 3.0 interface of 2013
[*]Removed the LG Tag +. It can be downloaded via "Application Management"
[*]Apply the latest security Google patches
[*]Updated the Google Mobile Suite applications and the basic applications of the smartphone
[*]Added the indicator for autofocus on the camera
[*]USB audio (use the micro USB connection to send media to a speakerdock) (AOA protocol)
[*]Alarm application with link (start immeditely an application when the alarm goes off)
[*]New functions in Quick Memo
[/LIST]
[/LIST]

No
[LIST]
[*]QSlide (QSlide Framework app is present. Available in the future maybe?)
[*]USB OTG
[/LIST][/CODE]
____________________________________________________________________________________________

[SIZE="6"][B][COLOR="Red"]Frequent Question and Answers[/COLOR][/B][/SIZE]
[B]IF YOU ENCOUNTER LOW CHARGE CURRENT ISSUE - [URL="http://xdaforums.com/showthread.php?t=2187017"]To disable it[/URL][/B]
It is not a bug with JB.1.2 update. This feature was already present in ICS F/Ws.
The reason for this is to prevent your phone from overheating (your phone gets warm during charge fyi) when there was already heat present (ie After playing games, watching youtube, long web surfing, moderate - intensive usage, etc). Low current will prevent additional heat from building up.
Re-inserting your battery may or may not help depending on how much heat was there. To 'fix' this restart your phone and charge after around 2-3 minutes.

[B]Please add comments and specify if there's anything new and i'll update this post asap, for every new offical F/W updates.[/B]