[Q] Go back from Rogers GB to ATT Froyo

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I updated from ATT firmware to Rogers V20C.
I don't like the update since it doesn't support Spanish, that I need to use for my wife.
Also, I wasn't able to make the FM radio work.
I want to go back to ATT original firmware
I tried 'Recovery Phone' in the LGMobile Support tool, but it tells me that this model can't be updated.
How can I go back to the original firmware?

https://rapidshare.com/#!download|29...3EA9EC4787|0|0

Fallow that link to dl bin for thrill then flash using bin flash lgflashtool
thrillin

Link for how to in general section o3d forum or in our dev section you pick where to look and enjoy

thrillin

link to lgflashtool download?

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could you pls?

Go to o3d forum general section then look its the first post its a sticky
thrillin

Originally Posted by adixtra

IN ENGLISH

Read the update at the bottom
(18 SEPTEMBER 2011)

NOTE !!!!!

Before installation, uninstall all LG's programs and drivers from your computer.

Tested on Windows XP.

Download all these files.


http://csmg.lgmobile.com:9002/data/S...shTool_1.1.zip
https://rapidshare.com/files/2393374474/file.zip
http://csmg.lgmobile.com:9002/swdata...er-4.10(2).zip
http://csmg.lgmobile.com:9002/data/L...in7_LGEAll.zip

LGFLASHTool 1.2 http://forum.xda-developers.com/show...&postcount=107

Thread with Optimus 3d Roms in *.bin format. http://forum.xda-developers.com/show....php?t=1246678Thanks to nasirahmed

1.Extract "Setup_LGFlashTool_1.1.zip" and Install.

2.Extract "file.zip" and put "LGFlashTool.exe" to location where you installed "Setup_LGFlashTool_1.1.zip" (default: C:\LG\LGFlashTool\)

3.Extract and Install "OMAPFlashInstaller-4.10(2).zip"

4.Exract "LGUnitedModemDriver_WHQL_ML_Ver_4.9.7_All_Win7_LG EAll.zip" and Install "LGUnitedMobileDriver_S497CA20_WHQL_ML_Ver_1.0 .exe " and "LGUnitedMobileDriver_S497MA20_WHQL_ML_Ver_1.0 .exe "

5.Turn Off phone, Remove your phone's SIM and SD cards.

6.Press and hold voll up button in phone.

7.When u holding "voll up button" connect the USB cable.

8.When computer detects the new hardware (Omap4430) release "voll up button".

9.Driver Installation:

a.

b.

c.

d.

e.

f.

g.

10.After Driver installation, go to device manager and change the port "LGE CDMA USB SERIAL PORT" to "com41".

a.

b.As I wrote above, you must change the port for "LGE CDMA USB SERIAL PORT" not for "LGE Mobile USB serial port" as pictured.


c.

d.

11.Run LGFlashTool.



12.In DLL select file for p920 or p920h ( from here http://forum.xda-developers.com/show....php?t=1246678"

13.In S/W select only *.bin file from downloaded rom.

14. Choice (Check) "USB" and click OK.

15. Click on Port COM settings(COM plug icon)

16.Check as on photos.

a.

b.

17. Click start(The Port 1 window should appear READY).



18. Disconnects USB cable and wait 5 seconds.

19. Press and hold voll up button in phone and connect USB cable.

20. The update process will begin automatically after that release the "vol up".

21.When the progress bar reaches 100%, Power ON the phone.

WARNING!!!

If the update process has stopped for a longer time (about 5 minutes) not disconnect the phone from USB, , press and hold Vol Up + Power and wait when update process resume.

You do this on your own risk!

Jeśli widzicie błędy, piszcie.




UPDATE 18 SEPTEMBER 2011

To flashing rom with LGFLASHTOOL without errors you need right USB cable.
Between 4 and 5 pin you have to solder resistor 910 Kohm.





The update process is the same ,but u don't need press any button when connect USB cable to phone.

Phone screen during update


This fix update screen isue



After flashing the phone will restart.

Update screen appears again(don't disconnect usb cable from phone and don't close LGDLASHTOOL)
Please wait until you see the info about error of OTA update.
After that the phone rebots and power On automaticaly.


Thanx to Marti701

thrillin

thrillin

There ya go enjoy

thrillin