The nomenclature of Samsung Jet's firmware codes:-
S800?rrymvS8000 = Model name (non-Asian countries)
S8003 = Model name (Asian countries)
rr = Region Codes (see list below)
y = Year | I = 2009 , J = 2010 , K = 2011 / etc.
m = Month | F = June , A = January , B = February .... G = July.. etc.
v = Version
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Region Codes
BD = Cyprus, Greece
BH = Mitteleuropäisch
CP = Finland
DB = Vietnam
DC = Thailand
DD = India
DT = Australia
DX = Indonesia, Malaysia, Philippines, Singapore, Vietnam
DZ = Malaysia, Singapore
JA = South Africa
JC = Algeria, Morocco, Nigeria, South Africa, Tunisia
JP = Algeria, Egypt, Iran, Iraq, Kuwait, Morocco, Nigeria, Oman, Pakistan, Saudi Arabia, South Africa, Syria, Tunisia, Turkey
MT = Switzerland
XA = Austria, France, Germany, Italy, Netherlands, Switzerland, United Kingdom
XB = Denmark, Norway, Sweden
XC = Portugal, Spain
XD = Croatia, Czech, Hungary, Slovakia
XE = Bulgaria, Estonia, Kazakhstan, Latvia, Lithuania, Russia, Ukraine, Germany
XF = Bulgaria, Croatia, Romania
XG = unter anderen Germany
XX = Austria, Belgium, France, Germany, Hungary, Italy, Spain, United Kingdom
ZC = China, Hong Kong
ZH = Hong Kong
ZT = Taiwan
other Codes: (branding)
AD = O2, Austria
AE = SFR, France
AI = Tim, Italy
AM = Vodafone
AN = E-Plus, Germany
AO = O2, Germany
AS = KPN, Netherland
AU = Mobilkom, Austria
BB = Tmn, Portugal
BF = Optimus, Portugal
BG = Telefonica, Spain
BM = Swisscom, Switzerland
BN = Amena, Spain
BO = T-Mobile, Germany
BU = Vodafone
BV = Orange, Switzerland
BW = O2, United Kingdom
CD = Proximus, Belgium
CG = Telia Mobitel, Sweden
CH = SingTel, Singapore
CK = Tele2 Comviq, Sweden
CT = Tdc, Denmark
CU = One, Austria
CV = Telenor, Norway
DT = Optus, Australia
DV = Telstra, Australia
EF = Celcom, Malaysia
JB = Vodacom, South Africa
MD = Telia Sonera, Finland
MJ = Vodafone, Italy
MM = Tele Ring, Austria
MV = NetCom, Norway
NA = Nrj, France
NB = Tele2 Norway, Norway
NE = H3g Nordic, Sweden
NP = H3g, Italy
RF = T-Mobile
SS = Vodafone, Japan