LG has both GSM and CDMA phones. Here I'll discuss on how to Flash/Software Update/Debrand
LG GSM phones. Flashing depends on Platform rather than Model, so you
may notice one model uses one flasher but the next model uses another.
Different models which are from same platform use same flasher. LG has
several platforms like Infineon, Qualcomm, ADI, TI, MTK, SEMC etc. I'll
try describe on each platform how to flash a phone. Remember that, till
now Windows XP is the best performing Operating Syetem for LG flashing.

~INFINEON~

Phones based on Infineon platform are flashed with GSMulti software.
GSMulti has different versions like 20, 21, 30. The last one is GSMulti V30
and it supports all infineon phones till now. Infineon phones can be
flashed both in USB and UART mode. Normally USB should be used, it will
flash the phone in minutes where UART will take hour(s). Sometimes when
phone is dead or rebooting and can't install USB driver you need to use
UART then. Some old phones support only UART.

Infineon flashing on UART
1. You need a USB to Serial Converter BOX/Cable with correct pinout of the phone.
2. Install and run GSMulti v30
3.
Go to Setting(s) > Configuration, select DLL and firmware on S/W
box, select UART as communication, select correct port of Box/cable,
then click OK.
4. Now click START on main window, when the
software says Wait Phone Connecting... connect POWERED OFF phone with
battery to cable and press POWER button.

Infineon flashing on USB
1. Install GSMULti V30
2. Connect phone to usb cable without battery, Windows will ask for driver, show driver from C:\GSMULTI\UsbDrivers\INFINEON.
3.
Open USBMap from C:\GSMULTI, select INFINEON and click MAPPING START,
reconnect the phone to usb cable without battery. Some info will show on
PORT/KEYNAME, now SAVE & EXIT.
4. Open GSMulti main
software, go to Setting(s) > Configuration, select DLL and firmware
on S/W box, select USB as communication then click OK. Now click START
on main window, when the software says Wait Phone Connecting..
reconnect the cable. If flashing not start without battery just put the
battery and slightly press power button.

Some new phones are from Infineon AGold plafrom, you need to install USB PortMapping Setup_1.7. Run USBMap_V07 from C:\GSMULTI, select INFINEON AGold Series and do mapping, rest of the procedure is same.

~Qualcomm~

Phones based on Qualcomm platform are flashed with LGMDP, LGDP1, LGDP2
etc. Several updates came for these flashers.You need the USB cable,
UART flashing not supported for this platform.

Flashing with LGMDP
1. Install LG United Modem Driver, connect the phone to PC through USB cable and let the drivers to be installed.
2. Opne LGMDP
soft, click on the Select Port, new window will pop up.Your phone model
and firmware version will be showed up there, if the phone is supported
with that LGMDP version it will be automatically ticked on the
checkbox. Now click Connect.
3. A new window will pop up for
firmware selection. Browse and select your firmware folder in the Select
Image box, all files will be automatically selected. You can change any
certain file from the browse button. If you are using a DZ firmware
click DZ button on the right lower corner of the window and and select
that.
4. Select data handling option:
NV Backup/Restore:
NV Backup/Restore always have to be done, and it is default selected
option. Backup the NV data and restore the backed up NV data
automatically.
Reset database & Contents: User related data including the setting data on the EFS is reset in the handset. The contents in the handset will be erased.
Erase_EFS:
The calibration data, user contents, media, and module will be erased.
Only calibration data is kept when NV backup/restore is checked.
Keep All Contents: No user data will be erased.
5. Now click Start and relax.

Emergency Download Mode:
Qualcomm phones support a special mode named emergency download mode.
In this mode, minimum units for downloading is occured so that users can
download the images again in case of emergency situation. AMSS Modem,
Media and Module Images won't be flashed in this mode. You may need it
when the phones not power on normally/incrorrectly flashed earlier etc.

Flashing with LGDP2
1. Downlaod LGDP2 V36 UMTS Setup
and extract, go to LGDP2_31_INCLUDE_LGDP1_Setup folder and install the
exe (use serial number). Now copy all the files from DOWNLOAD folder and
paste on C:\DOWNLOAD (overwrite if needed).
2. Install LG United Modem Driver, connect the phone to PC through USB cable and let the drivers to be installed.
3. You'll need firmware in DZ format and the correct DLL for your model.
4. Open LGDP2_V36_UMTS (for example) from C:\DOWNLOAD, select UMTS in Division and click OK.
5.
Select port (check Device Manager for LG USBModem Port number), you can
set a range from easy select or select manually. Select DLL and select
firmware in Downlaod Configuration. Click OK.
6. Click START in main window and connect the phone in Emergency download mode.

~ADI~

ADI phones are flashed with GSMulti. Can be flashed both in USB and UART mode, old phone only support UART.

ADI flashing on UART
1. Install and run GSMulti v30
2.
Go to Setting(s) > Configuration, select DLL and firmware on S/W
box, select UART as communication, select correct port of Box/cable,
then click OK.
3. Now click START on main window, when the
software says Wait Phone Connecting... connect POWERED OFF phone with
battery to cable and press POWER button.


ADI flashing on USB
1. Install GSMULti V30
2. Install MTK Download Setting.
3. Connect POWERED OFF phone to usb cable, Windows will ask for driver, show driver from C:\GSMULTI\UsbDrivers\MTK.
4.
Open USBMap from C:\GSMULTI, select MTK(ADI) and click MAPPING START,
reconnect the phone to USB cable (re-insert battery also). Some info
will show on PORT/KEYNAME, now SAVE & EXIT.
5. Open
GSMulti main software, go to Setting(s) > Configuration, select DLL
and firmware on S/W box, select USB as communication then click OK. Now
click START on main window, when the software says Wait Phone
Connecting.. reconnect the cable.Press POWER but if not start
automatically.




MTK based phones are flashed with Leo Tool. You need COM box/cable to flash, USB not supported.

Flashing Procedure
1. Download and Install Leo Tool.
2. Open Leo Downlaod Tool, select correct COM port for your BOX/cable.
3.
Click Setting and select firmware in pcs format, software will show
waiting, connect phone to BOX/cable and press POWER button, keep pressed
till the download agent is finished.
4. Release POWER button and let Leo Tool do the rest.

~TI~

TI phones are also flashed with GSMulti.

TI flashing on UART
1. Install and run GSMulti v30
2.
Go to Setting(s) > Configuration, select DLL and firmware on S/W
box, select UART as communication, select correct port of Box/cable,
then click OK.
3. Now click START on main window, when the
software says Wait Phone Connecting... connect POWERED OFF phone with
battery to cable and press POWER button.


TI flashing on USB
1. Install GSMULti V30
2. Install LGE_GSM_Device_Driver_OMAPV1030_1.0 from C:\GSMULTI\UsbDrivers\TI_NEPTUNE
2. Connect POWERED OFF phone to usb cable and install driver.
3.
Open USBMap from C:\GSMULTI, select TI and click MAPPING START,
reconnect the phone to USB cable (re-insert battery also). Some info
will show on PORT/KEYNAME, now SAVE & EXIT.
4. Open
GSMulti main software, go to Setting(s) > Configuration, select DLL
and firmware on S/W box, select USB as communication then click OK. Now
click START on main window, when the software says Wait Phone
Connecting.. reconnect the cable.Press POWER but if not start
automatically.

~SEMC (A2)~

Flashing Procedure
1. Downlaod LGDP2 V36 UMTS Setup
and extract, go to LGDP2_31_INCLUDE_LGDP1_Setup folder and install the
exe (use serial number). Now copy all the files from DOWNLOAD folder and
paste on C:\DOWNLOAD (overwrite if needed). Copy meflash.dll from
C:\DOWNLOAD\EMP_DL_USBDriver to C:\DOWNLOAD if not exist there.
2.
Connect the phone in POWERED OFF/SPECIAL BOOT MODE (varies on different
model) to usb cable and show driver from C:\DOWNLOAD\EMP_DL_USBDriver.
3. Open LGDP2_V34_UMTS_KF750 from C:\DOWNLOAD, select UMTS in Division and click OK.
5. Select DLL and click Run Download Configuration. Add .ssw files in LGE image box and .map files in LGE GDFS box. Click OK.
6. Click START in main window and reconnect the phone in POWERED OFF/SPECIAL BOOT MODE.

Here are some LG phones and their platforms,

Infineon:
GB100, GB100a, GB101, GB102, GB102GO, GB105, GB105a, GB106, GB107,
GB108, GB109, GB110, GB115, GB125, GB125a, GB125b, GB125R, GB130, GB210,
GB220, GB220GO, GB220N, GB220NGO, GB230, GB250, GB250f, GB250g, GB255,
GB255f, GB255g, GB258, GB280, GC900, GC900e, GC900f, GD310, GD350,
GD510, GD510GO, GD510N, GD550, GD550e, GD900, GD900e, GD900f, GD910,
GD910c, GD970, GM310, GM310f, GM310g, GS100, GS101, GS101a, GS101GO,
GS102, GS105, GS106, GS107, GS107a, GS108, GS117, GS155, GS155a, GS155b,
GS290, GS290GO, GS290N, GS290NGO, GS390, GS390GO, GS500, GS500g,
GS500v, GT350, GT350GO, GT350i, GT360, GT365, GW520, GW525, GW525f,
GW525g, KC550, KC550d, KC560, KC780, KE260, KE600, KE608, KE770, KE800,
KE820, KE850, KE850a, KE858, KE970, KE970GO, KF350, KF350d, KF510,
KF510c, KF510d, KF600, KF600c, KF600d, KF900, KG270, KG271, KG275,
KG276, KM380, KM380c, KM380d, KM380T, KM385, KM900, KM900e, KM900f,
KP100, KP105, KP106a, KP106b, KP107, KP107a, KP108, KP270, KP275, KP500,
KP501, KP502, KP550, KP570, KS360, KS365, KS660,

Infineon AGold: GM360, GM360GO, GM360i, GM600, GU220, GU230, GX300, GX500

Qualcomm:
BL20, BL20e, BL20GO, BL20T, BL20V, BL40, BL40e, BL40f, BL40g, BL42k,
CB630, CT810, CT815, CU405, CU500, CU500V, CU515, CU575, CU720, CU915,
CU920, GD570, GD570AQ, GD880, GD880f, GD880g, GM630, GM730, GM730e,
GM735, GM750, GM750h, GM750n, GM750Q, GR700, GS505, GT540, GT540f,
GT540g, GT540GO, GT540R, GT950, GU280, GU280f, GU285, GU285f, GU285g,
GU290, GU290v, GU292, GU295, GU295g, GW620, GW620f, GW620g, GW620R,
GW820, GW825, GW825v, HB620, HB620T, KB620, KB770, KB775f, KC910,
KC910e, KC910i, KC910Q, KC910Qa, KE990, KE990c, KE990d, KE998, KF310,
KF311, KF390, KF390Q, KF690, KF700, KF701, KT610, KT615, KU250, KU310,
KU311, KU380, KU385, KU450, KU800, KU950, KU970, KU990, KU990GO, KU990i,
KU990R, TU500, TU515, TU720, U250, U300, U300c, U310, U310c, U370,
U450, U830, U880, U890, U900,U960, U990.

ADI:
GM200, GM205, GM210, GW300, GW300FD, GW300GO, GW305, GW880, KF240,
KF20c, KF240d, KF240T, KF245C, KF300, KF300c, KF300e, KG108, KG110,
KG118, KG120, KG130, KG130GO, KG210, KG220, KG225, KG240, KG245, KG280,
KG290, KG291, KG296, KG320, KG800, KG920, KP110, KP115, KP130, KP135,
KP170, KP175, KP200, KP202, KP202i, KP210, KP215, KP230, KP233, KP260,
KP265, KP293i,

TI: CG180, CG225, CG300, CP150, GD330, GD335, KE500, KE508, KE590, KM500, KM501, KM710, KM710d

MTK:
GB160, GB160a, GB160b, GB161, GB165, GB170, GB175, GB190, GB190a,
GB195, GB270, GS190, GS205, GX200, KF301, KG190, KG195, KG200, KG300,
KM330, KM335

SEMC(A2): CF360, GD580, GD710, GR500, GR500f, GR500R, GR501,
GT400, GT400GO, GT405, GT500, GT500N, GT505, GT505e, GW370, GW370B,
KF750, KF755, KF757, KF758, KS500, KT520, KT525

Everywhere in this LG section, for example

Latest Lg Firmware Share & Request Here

LG New Flash Files Download Here

LG Arabic Firmwares Download Here

etc.

GD510 Firmware you can get here
LG New Flash Files Download Here

and DLL
GD510_090916.rar