Android L is for Lockdown

Root is, without a doubt, the (un)holy grail of the Android world. Those wonderful permissions that allow you as … more

XDA Xposed Tuesday: XHangouts Will Improve Your Hangouts

Ever since Google started supporting text messaging in Hangouts many people have … more

Shattered Screen? Turn Your Broken Device into a Complete Media Center!

A cracked screen usually means you’ll have to spend a hefty … more

Gmail 5.0: Material Design and Multiple Account Support

Google started to materialize many of its applications right after announcing the … more
Post Reply

[GUIDE] Install v21y baseband on P999 w/o stock firmware using 64-bit Win7

OP HearWa

20th September 2012, 09:56 PM   |  #1  
OP Junior Member
Flag Toronto
Thanks Meter: 4
 
5 posts
Join Date:Joined: Dec 2011
More
If you own a P999 and didn't update in time to get the latest baseband from LG's Update utility this guide is for you. Windows XP compatibility mode isn't used so people such as myself who have Windows 7 Home Premium can follow this procedure. I am a Wind Mobile user and while the forums have enough information on how to do this I decided to compile a concise guide to save everyone some time.

Note that this will remove your cwm recovery installation if you have one. You will have to nvflash your phone again. And of course I am not responsible for any repercussions that may occur by you following this guide.
  • Backup all apps + data.
  • Download the cwm backup stock wind firmware, a kdz file with the v21y baseband and the vbscript installation archive.
  • Extract wind firmware archive in clockworkmod/backup.
  • Boot into cwm recovery.
  • Clear data and cache.
  • "Recover" wind firmware from backup.
  • Boot into the new wind firmware.
  • Extract vbscript installation on PC and follow the directions from the download page. There's only one thing you do different: don't change the "Diag" menu to "EMERGENCY". Diagnostic mode is for phones that are powered on, emergency is for s/w update mode (volume down + power).

You are now running T-Mobile gingerbread with the v21y baseband! Now you can nvflash cwm recovery again and install your ROM of choice!
Last edited by HearWa; 9th October 2012 at 02:57 AM.
The Following 4 Users Say Thank You to HearWa For This Useful Post: [ View ]
6th October 2012, 06:53 AM   |  #2  
Senior Member
Thanks Meter: 19
 
169 posts
Join Date:Joined: Dec 2011
Anybody tried this?
9th October 2012, 02:50 AM   |  #3  
OP Junior Member
Flag Toronto
Thanks Meter: 4
 
5 posts
Join Date:Joined: Dec 2011
More
Quote:
Originally Posted by wizshaw

Anybody tried this?

I guess there's not much interest in this but it worked great for me. I just submitted the steps to make life a little bit easier for anyone else in the same predicament.
9th October 2012, 03:00 AM   |  #4  
justjackyl's Avatar
Senior Member
Thanks Meter: 570
 
1,565 posts
Join Date:Joined: Jul 2012
More
Quote:
Originally Posted by HearWa

I guess there's not much interest in this but it worked great for me. I just submitted the steps to make life a little bit easier for anyone else in the same predicament.

Does it work to downgrade ur baseband? I never got any method to work on ne pc setup

Sent from my LG-P999 using xda app-developers app
The Following User Says Thank You to justjackyl For This Useful Post: [ View ]
10th October 2012, 08:34 PM   |  #5  
Midnight_Rider's Avatar
Senior Member
Flag Kannapolis, NC
Thanks Meter: 1,067
 
1,760 posts
Join Date:Joined: Feb 2012
More
Quote:
Originally Posted by justjackyl

Does it work to downgrade ur baseband? I never got any method to work on ne pc setup

Sent from my LG-P999 using xda app-developers app

follow the steps in this thread and download the v21e KDZ file listed. i do this all the time in XP Mode virtual machine. the trick is to keep watching the USB menu in the window to make sure your phone is connected. it will disconnect once in awhile so you just have to "attach" it in the VM and it will continue
http://forum.xda-developers.com/show....php?t=1680292
3rd December 2012, 09:27 PM   |  #6  
Senior Member
Flag Gatineau
Thanks Meter: 6
 
106 posts
Join Date:Joined: Aug 2008
More
Thumbs up
This is exactly what I needed, thank you
14th December 2012, 05:10 AM   |  #7  
knotes's Avatar
Junior Member
Flag Markham
Thanks Meter: 6
 
26 posts
Join Date:Joined: Dec 2012
More
help please
hey I'm a beginner at this and i just want to clear a few things about the update before i proceed

1. will this automatically remove cwm recovery or will i have to do it manually?
2. do i need to unroot the phone?
14th December 2012, 06:26 AM   |  #8  
Senior Member
Flag Chesterbrook
Thanks Meter: 102
 
456 posts
Join Date:Joined: Oct 2011
Donate to Me
More
cwm is manual
No need to unroot

Sent from my LG-P999 using xda premium
The Following 2 Users Say Thank You to kesara For This Useful Post: [ View ]
8th June 2014, 05:59 AM   |  #9  
Junior Member
Thanks Meter: 0
 
2 posts
Join Date:Joined: Jun 2014
tmobile lg p 999 v21y
Quote:
Originally Posted by HearWa

If you own a P999 and didn't update in time to get the latest baseband from LG's Update utility this guide is for you. Windows XP compatibility mode isn't used so people such as myself who have Windows 7 Home Premium can follow this procedure. I am a Wind Mobile user and while the forums have enough information on how to do this I decided to compile a concise guide to save everyone some time.

Note that this will remove your cwm recovery installation if you have one. You will have to nvflash your phone again. And of course I am not responsible for any repercussions that may occur by you following this guide.

  • Backup all apps + data.
  • Download the cwm backup stock wind firmware, a kdz file with the v21y baseband and the vbscript installation archive.
  • Extract wind firmware archive in clockworkmod/backup.
  • Boot into cwm recovery.
  • Clear data and cache.
  • "Recover" wind firmware from backup.
  • Boot into the new wind firmware.
  • Extract vbscript installation on PC and follow the directions from the download page. There's only one thing you do different: don't change the "Diag" menu to "EMERGENCY". Diagnostic mode is for phones that are powered on, emergency is for s/w update mode (volume down + power).

You are now running T-Mobile gingerbread with the v21y baseband! Now you can nvflash cwm recovery again and install your ROM of choice!

hi i need help may someone offer me arabic stock rom for my tmobile lg p999 v21y plz

Post Reply Subscribe to Thread
Previous Thread Next Thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes