1.) I'm looking for a guide I thought I saw that explained what all the terms used here meant such as MAIN, FS, What REGIONS meant etc. If I wasn't seeing things, can you link me to that topic?

2>) My question is, can you mix say:
W800_R1BC002_FS_AMERICA2_CID49

with

W800_R1BC002_MAIN_EU_EMEA_RED49 ?

Or do you have to use the same specific regions such as:
W800_R1BC002_MAIN_APAC
W800_R1BC002_FS_APAC_CID49

3.) What is APAC vs. America1, America2?

CDA102425/25 - W800i Claro Claro Brazil
CDA102425/33 - W800i Digicell Digicell MMC Venezuela
CDA102425/36 - W800i E+ E+ Germany
CDA102430/105 - W800i Generic Generic Argentina, Latin America
CDA102425/40 - W800i Generic EUROPE_2 Generic Australia
CDA102425/4 - W800i Generic Generic Belgium
CDA102430/14 - W800i Generic Generic Chile
CDA102425/3 - W800i Generic Generic China
CDA102430/2 - W800i Generic Generic Czech rep
CDA102425/16 - W800i Generic Generic France
CDA102430/10 - W800i Generic EUROPE_2 Generic Germany, South Africa
CDA102425/39 - W800i Generic Generic Greece
CDA102425/15 - W800i Generic Generic Hong Kong
CDA102430/4 - W800i Generic Generic Hungary

CDA102430/6 - W800i Generic Generic India, Morocco, UAE
CDA102430/101 - W800i Generic Generic Indonesia; Phillippines Vietnam; Singapore Malaysia
CDA102425/5 - W800i Generic Generic Italy
CDA102425/17 - W800i Generic Generic Netherlands
CDA102430/1 - W800i Generic EMEA_1 Generic Poland
CDA102430/9 - W800i Generic Generic Portugal
CDA102425/38 - W800i Generic Generic Russia
CDA102430/12 - W800i Generic Generic SE / FI; DK/NO
CDA102425/23 - W800i Generic Generic Spain
CDA102430/13 - W800i Generic Generic Switzerland
CDA102425/7 - W800i Generic Generic Taiwan
CDA102430/102 - W800i Generic Generic Thailand
CDA102425/37 - W800i Generic Generic Turkey
CDA102425/6 - W800i Generic Generic UK
CDA102425/55 - W800i Generic Generic USA
CDA102425/47 - W800i KPN KPN Netherlands
CDA102425/8 - W800i Mobilkom Mobilkom Austria
CDA102425/9 - W800i O2 O2 UK
CDA102425/32 - W800i Optus Optus Australia
CDA102425/46 - W800i Orange Orange Netherlands
CDA102425/22 - W800i Orange Orange Switzerland
CDA102425/10 - W800i Orange Orange UK
CDA102425/42 - W800i SingTel SingTel Mobile Singapore
CDA102425/21 - W800i Sunrise Sunrise Austria
CDA102425/11 - W800i Swisscom Swisscom Switzerland
CDA102425/61 - W800i Telefonica Telefonica Mexico
CDA102425/31 - W800i Telstra Telstra Australia
CDA102425/20 - W800i TIM TIM Brazil
CDA102425/66 - W800i T-Mobile T-Mobile Austria
CDA102425/43 - W800i T-Mobile T-Mobile UK
CDA102425/19 - W800i Vodacom Vodacom South Africa
CDA102425/14 - W800i Vodafone Vodafone Germany
CDA102425/35 - W800i Vodafone Vodafone Sweden
CDA102425/13 - W800i Vodafone Vodafone UK
CDA102430/106 - W800i Generic AMERICA_1
CDA102430/11 - W800i Generic EUROPE_3
CDA102430/12 - W800i Generic EUROPE_4
CDA102430/13 - W800i Generic EUROPE_5
CDA102430/2 - W800i Generic EMEA_2
CDA102430/3 - W800i Generic EMEA_3
CDA102430/4 - W800i Generic EMEA_4
CDA102430/5 - W800i Generic EMEA_5
CDA102430/6 - W800i Generic EMEA_6
CDA102430/7 - W800i Generic EMEA_7
CDA102430/8 - W800i Generic EMEA_8
CDA102430/9 - W800i Generic EUROPE_1

The codes in the left side are your customization pack versions it should be the same as your firmware version, otherwise you will get the "configuration error" after flashing!

Firmware versions contains supporting languages (according to your region).
YOU CAN MIX MAIN AND FS, BUT USE THE PROPER CUSTOMIZATION PACK ACCORDING TO YOUR FS VERSION!

===somebody correct me if I'm wrong!====

Apac contains some languages for asian countries while america 1 and 2 contains all of the countries in america.

Check http://www.topsony.com/forum/cmps_index.ph...e=info_lenguaje for more info.

Thank you both, very helpful.