[LG Optimus 4X HD] L2Deliver:
I've been receiving PMs about confusions arising from misunderstanding how csmg.lgmobile.com links work

To understand the following you need to know what is LG Mobile Tools. If you already know, good.

Now you can throw LG Mobile tools out of the windows, we don't really need it here.

There are three types of csmg.lgmobile.com links you will see:

-------------------------------------------------

1. csmg.lgmobile.com:9002/csmg/b2c/client/web_model_list.jsp?country=SG&model=LGP880

This is the link LG Mobile Tools goto to when looking for the correct USB drivers for the particular model in the particular country. It also shows the latest ROM for all operators in your country and region

How to use: Replace the red highlighted with your country code and phone model. In this page look for your operator or region, copy and paste the corresponding URL into the address bar to download the drivers

2. csmg.lgmobile.com:9002/csmg/b2c/client/auth_model_check2.jsp?esn=[IMEI]

This is the link where the latest ROM for your IMEI is checked after LG Mobile Tools submits your IMEI. On this page only info for your IMEI is shown.

How to use: Key in your IMEI on the red highlighted. This page provides you the download link to the LATEST ROM just for your phone. Both links are identical

3. csmgdl.lgmobile.com/swdata/WDLSW/LGP880/ASHBBK/V20a_00/V20A_00.kdz

Continuing from 2., the part that says /LGP880 refers to the model, /ASHBBK region or operator, the rest version number and file. Anything you are able to download from here are direct from LG's server and is official, since they opens the file for you.

If you came from link no 2, this file IS THE CUSTOMISED ROM for your phone you should be running according to LG.

-------------------------------------------------

Not having the latest ROM shown for your phone isn't the end of the world. Unless LG decides to remove any method to flash (thereby rendering their own service department useless), you can always flash it LG Service Center style with the available tools and methods.

Compatbility concerns

As long as you intends to put in LG original ROMs for your model on your phone using the correct method, your phone system will naturally and stupidly accept it, and safe. That is why custom roms always carries a risk of incompatibility.

But if you shows up to them for warranty with a phone running a futuristic ROM, your warranty's busted.

csmg.lgmobile.com doesn't know what crap you are running. Your secret is safe if you don't tell them (doesn't covers secret intelligence gathering by LG, MLT.apk)

Ok, compability isn't an issue, there's still one concern, Baseband, or frequencies.

99% of flashing going on here using official LG ROMs for the correct model have no issues with baseband. You can flash Euro Open on to a HK set, or vice versa, because one simple reason - The ROM is designed for this phone, it will support all basebands this phone has

If you thinks further, this will bring out possibily another question, does your phone support the baseband used in your country?

Easy, www.gsmarena.com has the spec sheet for you. All you need is to call up your carrier to check with them, or any other regulations before you buy a phone from foreign country.

Nonetheless, if you happens to encounter baseband issue after flashing, fear not, the problem doesn't call for nuclear war. Download the firmware for your IMEI or last ok ROM, flash it.

all above info are AFAIK.