[Sony Xperia S, Acro S, Ion] lee480:
Here's all the CDA numbers. The best solution is to guess and check which CDA has the JB update rolled out. I recommend trying Australia, Nordic and Europe as they seem to always receive it first. Edit: And European carrier branded too.

[B]ID	Color	Name	Rel.date	CDA/CDF	Language variant	CXC	Languages available[/B]
0	Red	LT26I/MOBILE PHONE/NT1-1_EP850/3 AT (AUSTRIA)/BLAC	01.01.1970	1257-4270/R8E	HUTCH	LT26I 3 AT 1257-4270	N/A
1	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/3 DK (DENMARK	01.01.1970	1257-4340/R7E	HUTCH	LT26I 3 DK 1257-4340	N/A
2	Red	LT26I/MOBILE PHONE/3 HK (HONG KONG)/BLACK	01.01.1970	1257-4777/R8E	HUTCH	LT26I 3 HK 1257-4777	N/A
3	Red	LT26I/MOBILE PHONE/3 HK (HONG KONG)/WHITE	01.01.1970	1257-4777/R8E	HUTCH	LT26I 3 HK 1257-4777	N/A
5	Red	3 SE/WHITE	01.01.1970	1257-4379/R8E	HUTCH	LT26I 3 SE 1257-4379	N/A
6	Red	3 SE/BLACK	01.01.1970	1257-4379/R8E	HUTCH	LT26I 3 SE 1257-4379	N/A
8	Red	LT26I/MOBILE PHONE/CHT TW/BLACK	01.01.1970	1257-8897/R7E	WORLD	LT26I CHT TW 1257-8897	N/A
9	Red	LT26I/MOBILE PHONE/CHT TW/WHITE	01.01.1970	1257-8897/R7E	WORLD	LT26I CHT TW 1257-8897	N/A
10	Red	CUSTOMIZED NCB/BLACK	01.01.1970	1257-6919/R7E	WORLD	LT26I CUSTOMIZED-NCB WORLD CDF1257-6919	N/A
11	Red	CUSTOMIZED NCB/WHITE	01.01.1970	1257-6919/R7E	WORLD	LT26I CUSTOMIZED-NCB WORLD CDF1257-6919	N/A
13	Red	LT26I/MOBILE PHONE/ET930_IM820_EP850/COSMOTE GR (G	01.01.1970	1257-4712/R7E	WORLD	LT26I COSMOTE GR 1257-4712	N/A
15	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/CUSTOMIZED BA	01.01.1970	1257-6938/R6E	WORLD	LT26I CUSTOMIZED BAL 1257-6938	N/A
16	Red	LT26I/MOBILE PHONE/ET930_IM820/CUSTOMIZED BE (BELG	01.01.1970	1257-5020/R4E	WORLD	LT26I CUSTOMIZED BE 1257-5020	N/A
17	Red	LT26I/MOBILE PHONE/CA950_ET930_IM820_EP850/CUSTOMI	01.01.1970	1257-5102/R4E	WORLD	LT26I CUSTOMIZED CE1 1257-5102	N/A
18	Red	LT26I/MOBILE PHONE/CA950_IM820_EP850/CUSTOMIZED CE	01.01.1970	1257-5106/R4E	WORLD	LT26I CUSTOMIZED CE3 1257-5106	N/A
19	Red	LT26I/MOBILE PHONE/NT1-1_EP850/CUSTOMIZED CH (SWIT	01.01.1970	1257-4009/R4E	WORLD	LT26I CUSTOMIZED CH 1257-4009	N/A
20	Red	LT26I/MOBILE PHONE/CUSTOMIZED CN (CHINA)/BLACK	01.01.1970	1257-6744/R10E	CHINA	LT26I CUSTOMIZED CN 1257-6744	N/A
21	Red	LT26I/MOBILE PHONE/CUSTOMIZED CN (CHINA)/WHITE	01.01.1970	1257-6744/R10E	CHINA	LT26I CUSTOMIZED CN 1257-6744	N/A
22	Red	LT26I/MOBILE PHONE/NT1-1_EP850/CUSTOMIZED DE (GERM	01.01.1970	1257-6750/R8E	WORLD	LT26I CUSTOMIZED DE 1257-6750	N/A
23	Red	CUSTOMIZED FR/BLACK	01.01.1970	1257-4001/R8E	WORLD	LT26I CUSTOMIZED FR 1257-4001	N/A
24	Red	CUSTOMIZED FR/WHITE	01.01.1970	1257-4001/R8E	WORLD	LT26I CUSTOMIZED FR 1257-4001	N/A
25	Red	LT26I/MOBILE PHONE/ET930_IM820_EP850/CUSTOMIZED GB	01.01.1970	1257-4624/R4E	WORLD	LT26I CUSTOMIZED GBA 1257-4624	N/A
26	Red	CUSTOMIZED GR/BLACK	01.01.1970	1257-4626/R4E	WORLD	LT26I CUSTOMIZED GR 1257-4626	N/A
27	Red	CUSTOMIZED GR/WHITE	01.01.1970	1257-4626/R4E	WORLD	LT26I CUSTOMIZED GR 1257-4626	N/A
28	Red	LT26I/MOBILE PHONE/CUSTOMIZED HK (HONG KONG)/BLACK	01.01.1970	1257-7763/R6E	WORLD	LT26I CUSTOMIZED HK 1257-7763	N/A
29	Red	LT26I/MOBILE PHONE/CUSTOMIZED HK (HONG KONG)/WHITE	01.01.1970	1257-7763/R6E	WORLD	LT26I CUSTOMIZED HK 1257-7763	N/A
30	Red	CUSTOMIZED IBE/BLACK	01.01.1970	1257-4921/R6E	WORLD	LT26I CUSTOMIZED IBE 1257-4921	N/A
31	Red	CUSTOMIZED IBE/WHITE	01.01.1970	1257-4921/R6E	WORLD	LT26I CUSTOMIZED IBE 1257-4921	N/A
34	Red	LT26I/MOBILE PHONE/CUSTOMIZED MEA (MENA ARABIC (B)	01.01.1970	1257-8080/R6E	WORLD	LT26I CUSTOMIZED MEA 1257-8080	N/A
35	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820_AN400/CUSTOMI	01.01.1970	1257-7770/R6E	WORLD	LT26I CUSTOMIZED SA 1257-7770	N/A
36	Red	LT26I/MOBILE PHONE/ET930_MH1C_NT1-1_EC600L_IM820_A	01.01.1970	1257-6917/R4E	WORLD	LT26I CUSTOMIZED MY 1257-6917	N/A
37	Red	LT26I/MOBILE PHONE/NT1-1_EP850/CUSTOMIZED NL (NETH	01.01.1970	1257-1993/R5E	WORLD	LT26I CUSTOMIZED NL 1257-1993	N/A
39	Red	LT26I/MOBILE PHONE/CUSTOMIZED SA (SAUDI ARABIA)/WH	01.01.1970	1257-7770/R6E	WORLD	LT26I CUSTOMIZED SA 1257-7770	N/A
40	Red	LT26I/MOBILE PHONE/CUSTOMIZED SA (SAUDI ARABIA)/BL	01.01.1970	1257-7770/R6E	WORLD	LT26I CUSTOMIZED SA 1257-7770	N/A
42	Red	LT26I/MOBILE PHONE/CUSTOMIZED TW (TAIWAN)/WHITE	01.01.1970	1257-7802/R11E	WORLD	LT26I CUSTOMIZED TW 1257-7802	N/A
43	Red	LT26I/MOBILE PHONE/CUSTOMIZED TW (TAIWAN)/BLACK	01.01.1970	1257-7802/R11E	WORLD	LT26I CUSTOMIZED TW 1257-7802	N/A
47	Red	LT26I/MOBILE PHONE/CUSTOMIZED US (USA)/WHITE	01.01.1970	1257-6926/R4E	WORLD	LT26I CUSTOMIZED US 1257-6926	N/A
48	Red	LT26I/MOBILE PHONE/CA950_ET930_IM820_EP850/GLOBUL	01.01.1970	1257-4614/R7E	WORLD	LT26I GLOBUL BG 1257-4614	N/A
49	Red	KPN MOBILE NL/BLACK	01.01.1970	1257-1995/R4E	WORLD	LT26I KPN-MOBILE-NL WORLD CDF1257-1995	N/A
50	Red	LT26I/MOBILE PHONE/ET930_NT1-1_NT1-2_IM820/METEOR	01.01.1970	1257-1991/R5E	WORLD	LT26I METEOR IE 1257-1991	N/A
55	Red	LT26I/MOBILE PHONE/ET930_IM820/NRJ FR (FRANCE)/BLA	01.01.1970	1261-4816/R5E	WORLD	LT26I NRJ FR 1261-4816	N/A
56	Red	O2 IE/BLACK	01.01.1970	1257-8907/R6E	WORLD	LT26I O2 IE 1257-8907	N/A
58	Red	LT26I/MOBILE PHONE/NT1-1_IM820_EP850/ORANGE CH (SW	01.01.1970	1257-7418/R7E	WORLD	LT26I ORANGE CH 1257-7418	N/A
62	Red	LT26I/MOBILE PHONE/ET930_IM820/ORANGE UK (UNITED K	01.01.1970	1257-7799/R8E	WORLD	LT26I ORANGE UK 1257-7799	N/A
63	Red	LT26I/MOBILE PHONE/PT. SURYA CITRA MULTIMEDIA (IND	01.01.1970	1257-4655/R6E	WORLD	LT26I PT. SURYA CITRA MULTIMEDIA 1257-4655	N/A
64	Red	LT26I/MOBILE PHONE/PT. TELETAMA ARTHA MANDIRI ID (	01.01.1970	1257-2013/R6E	WORLD	LT26I PT. TELETAMA ARTHA MANDIRI ID 1257-2013	N/A
65	Red	LT26I/MOBILE PHONE/PT. TRIKOMSEL OKE TBK ID (INDON	01.01.1970	1257-2011/R6E	WORLD	LT26I PT. TRIKOMSEL OKE TBK ID 1257-2011	N/A
66	Red	LT26I/MOBILE PHONE/EP850/POLKOMTEL PLUS PL (POLAND	01.01.1970	1257-5701/R9E	WORLD	LT26I POLKOMTEL PLUS PL 1257-5701	N/A
69	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820_EP850/SINGTEL	01.01.1970	1257-9049/R5E	WORLD	LT26I SINGTEL SG 1257-9049	N/A
72	Red	LT26I/MOBILE PHONE/ET930_IM820_EP850/T-MOBILE AT/B	01.01.1970	1257-8165/R12E	WORLD	LT26I T-MOBILE AT 1257-8165	N/A
73	Red	LT26I/MOBILE PHONE/ET930_IM820_EP850/T-MOBILE AT/W	01.01.1970	1257-8165/R12E	WORLD	LT26I T-MOBILE AT 1257-8165	N/A
74	Red	LT26I/MOBILE PHONE/CA950_EP850/T-MOBILE CZ (CZECH	01.01.1970	1257-8167/R8E	WORLD	LT26I T-MOBILE CZ 1257-8167	N/A
75	Red	LT26I/MOBILE PHONE/ET930_IM820/T-MOBILE HR (CROATI	01.01.1970	1257-7448/R6E	WORLD	LT26I T-MOBILE HR 1257-7448	N/A
76	Red	LT26I/MOBILE PHONE/ET930_IM820/T-MOBILE HU/BLACK	01.01.1970	1257-7815/R6E	WORLD	LT26I T-MOBILE HU 1257-7815	N/A
77	Red	LT26I/MOBILE PHONE/NT1-1_EP850/T-MOBILE NL (NETHER	01.01.1970	1257-8171/R9E	WORLD	LT26I T-MOBILE NL 1257-8171	N/A
78	Red	LT26I/MOBILE PHONE/NT1-1_NT1-2_EP850/T-MOBILE PL (	01.01.1970	1257-7450/R7E	WORLD	LT26I T-MOBILE PL 1257-7450	N/A
79	Red	LT26I/MOBILE PHONE/ET930_IM820/T-MOBILE UK (UNITED	01.01.1970	1257-8169/R8E	WORLD	LT26I T-MOBILE UK 1257-8169	N/A
80	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/TDC MOBIL DK	01.01.1970	1257-8801/R5E	WORLD	LT26I TDC MOBIL DK 1257-8801	N/A
81	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820_EP850/TMN PT	01.01.1970	1257-8865/R5E	WORLD	LT26I TMN PT 1257-8865	N/A
83	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/TELENOR DK (D	01.01.1970	1257-8829/R6E	WORLD	LT26I TELENOR DK 1257-8829	N/A
84	Red	LT26I/MOBILE PHONE/ET930_IM820/TELENOR HU (HUNGARY	01.01.1970	1257-5600/R4E	WORLD	LT26I TELENOR HU 1257-5600	N/A
85	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/TELENOR MOBIL	01.01.1970	1257-8821/R9E	WORLD	LT26I TELENOR MOBIL NO 1257-8821	N/A
86	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/TELENOR SE (S	01.01.1970	1258-0126/R9E	WORLD	LT26I TELENOR SE 1258-0126	N/A
87	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/TELIA DK/WHIT	01.01.1970	1257-7813/R6E	WORLD	LT26I TELIA DK 1257-7813	N/A
88	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/TELIA DK/BLAC	01.01.1970	1257-7813/R6E	WORLD	LT26I TELIA DK 1257-7813	N/A
89	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820_EP850/TURKCEL	01.01.1970	1262-9562/R4E	WORLD	LT26I TURKCELL TR 1262-9562	N/A
92	Red	LT26I/MOBILE PHONE/NT1-1_EP850/O2 DE (GERMANY)/BLA	01.01.1970	1257-2015/R10E	WORLD	LT26I O2 DE 1257-2015	N/A
94	Red	LT26I/MOBILE PHONE/IM820/MOBITEL SI (SLOVENIA)/BLA	01.01.1970	1257-9061/R5E	WORLD	LT26I MOBITEL SI 1257-9061	N/A
103	Red	LT26I/MOBILE PHONE/AN400_IM820_ET930/VODACOM ZA (S	03.04.2012	1257-7817/R7E	WORLD	LT26I VODACOM ZA 1257-7817	N/A
106	Red	LT26I/MOBILE PHONE/IM820/ENTEL PCS CL (CHILE)/BLAC	04.04.2012	1257-9035/R5E	WORLD	LT26I ENTEL PCS CL 1257-9035	N/A
208	Red	LT26I/MOBILE PHONE/CLARO PE (PERU)/BLACK	07.05.2012	1257-8905/R8E	WORLD	LT26I CLARO PE 1257-8905	N/A
211	Red	CLARO GT/BLACK	08.05.2012	1257-8901/R7E	WORLD	LT26I CLARO-GT WORLD CDF1257-8901	N/A
225	Red	LT26I/MOBILE PHONE/COMCEL 3GSM CO (COLOMBIA)/BLACK	08.06.2012	1257-9029/R16E	WORLD	LT26I COMCEL 3GSM CO 1257-9029	N/A
226	Red	LT26I/MOBILE PHONE/CUSTOMIZED GEL (GENERIC LAM (B)	08.06.2012	1257-6754/R3E	WORLD	LT26I CUSTOMIZED GEL 1257-6754	N/A
212	Red	LT26I/MOBILE PHONE/ET930/CLARO PA (PANAMA)/BLACK	09.05.2012	1264-4233/R1E	WORLD	LT26I CLARO PA 1264-4233	N/A
108	Red	LT26I/MOBILE PHONE/ET930/TELCEL GSM MX (MEXICO)/WH	10.04.2012	1257-6954/R10E	WORLD	LT26I TELCEL GSM MX 1257-6954	N/A
109	Red	LT26I/MOBILE PHONE/ET930/TELCEL GSM MX (MEXICO)/BL	10.04.2012	1257-6954/R10E	WORLD	LT26I TELCEL GSM MX 1257-6954	N/A
4	Red	3 IE/BLACK	22.03.2012	1257-3812/R8E	HUTCH	LT26I 3 IE 1257-3812	N/A
7	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820/3 UK (UNITED	22.03.2012	1257-3815/R7E	HUTCH	LT26I 3 UK 1257-3815	N/A
12	Red	LT26I/MOBILE PHONE/IM820_EP850/CLARO CL (CHILE)/BL	22.03.2012	1257-8903/R7E	WORLD	LT26I CLARO CL 1257-8903	N/A
32	Red	LT26I/MOBILE PHONE/CA950_NT1-1_EC600L_IM820_AN400/	22.03.2012	1257-6758/R5E	WORLD	LT26I CUSTOMIZED IN 1257-6758	N/A
33	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820_EP850/CUSTOMI	22.03.2012	1257-3930/R6E	WORLD	LT26I CUSTOMIZED PH 1257-3930	N/A
41	Red	LT26I/MOBILE PHONE/ET930_IM820_EP850/CUSTOMIZED TH	22.03.2012	1257-6923/R4E	WORLD	LT26I CUSTOMIZED TH 1257-6923	N/A
51	Red	LT26I/MOBILE PHONE/EP850/MOBILTEL EAD BG (BULGARIA	22.03.2012	1257-7805/R4E	WORLD	LT26I MOBILTEL EAD BG 1257-7805	N/A
52	Red	LT26I/MOBILE PHONE/NT1-1_EP850/MOBILKOM A1 AT (AUS	22.03.2012	1257-7803/R6E	WORLD	LT26I MOBILKOM A1 AT 1257-7803	N/A
53	Red	LT26I/MOBILE PHONE/IM820_EP850/MOVISTAR CL (CHILE)	22.03.2012	1257-8219/R5E	WORLD	LT26I MOVISTAR CL 1257-8219	N/A
54	Red	LT26I/MOBILE PHONE/ET930_IM820/MOVISTAR ES (SPAIN)	22.03.2012	1257-9045/R8E	WORLD	LT26I MOVISTAR ES 1257-9045	N/A
67	Red	LT26I/MOBILE PHONE/ET930_IM820/PROXIMUS (VFE) BE (	22.03.2012	1263-6441/R2E	WORLD	LT26I PROXIMUS (VFE) BE 1263-6441	N/A
70	Red	LT26I/MOBILE PHONE/NT1-1_EP850/SUNRISE CH (SWITZER	22.03.2012	1257-4708/R5E	WORLD	LT26I SUNRISE CH 1257-4708	N/A
71	Red	LT26I/MOBILE PHONE/NT1-1_EP850/SWISSCOM CH (SWITZE	22.03.2012	1257-8141/R5E	WORLD	LT26I SWISSCOM CH 1257-8141	N/A
90	Red	LT26I/MOBILE PHONE/IM820_EP850/VIPNET HR (CROATIA)	22.03.2012	1257-7452/R5E	WORLD	LT26I VIPNET HR 1257-7452	N/A
102	Red	LT26I/MOBILE PHONE/ET930_NT1-1_IM820_EP850/TIM IT	22.03.2012	1263-2103/R3E	WORLD	LT26I TIM IT 1263-2103	N/A
149	Red	LT26I/MOBILE PHONE/CA950_IM820/CUSTOMIZED IN (INDI	22.03.2012	1257-6758/R5E	WORLD	LT26I CUSTOMIZED IN 1257-6758	N/A
214	Red	COMCEL 3GSM CO/BLACK	23.05.2012	1257-9029/R16E	WORLD	LT26I COMCEL-3GSM-CO CDF1257-9029	N/A
104	Red	LT26I/MOBILE PHONE/VODAFONE DE (GERMANY)/BLACK	26.03.2012	1257-6930/R5E	WORLD	LT26I VODAFONE DE 1257-6930	N/A
105	Red	VODAFONE IE/BLACK	26.03.2012	1257-7824/R5E	WORLD	LT26I VODAFONE IE 1257-7824	N/A
117	Red	LT26I/MOBILE PHONE/MOVISTAR PE (PERU)/BLACK	26.04.2012	1257-8185/R6E	WORLD	LT26I MOVISTAR PE 1257-8185	N/A
195	Red	ET930_NT1-1_IM820/TIM IT/WHITE	26.04.2012	1263-2103/R3E	WORLD	LT26I TIM IT 1263-2103	N/A
118	Red	CLARO PE/BLACK	27.04.2012	1257-8905/R8E	WORLD	LT26I CLARO_PE TESTREG CDF1257-8905	N/A
61	Red	LT26I/MOBILE PHONE/ET930_NT1-1_NT1-2_IM820_EP850/O	28.03.2012	1257-7443/R5E	WORLD	LT26I ORANGE RO 1257-7443	N/A
95	Red	LT26I/MOBILE PHONE/MOVISTAR CO (COLOMBIA)/BLACK	28.03.2012	1257-8227/R6E	WORLD	LT26I MOVISTAR CO 1257-8227	N/A
221	Red	ET930_NT1-1_IM820/TIM IT (ITALY)/BLACK	30.05.2012	1263-2103/R3E	WORLD	LT26I TIM IT 1263-2103	N/A
217	Red	CUSTOMIZED GEL (GENERIC LAM (B))/BLACK	31.05.2012	1257-6754/R3E	WORLD	LT26I CUSTOMIZED GEL 1257-6754	N/A