[XPERIA X10 Q&A, Help & Troubleshooting] thanhss:
2.1 using /system/build.prop

here is list all code (from support.setool.net forum)

X10a 3-AU NAM1 1234-4828	1232-4469 3 AU/Sensuous black

X10a CLARO-BR NAM1 1233-6927	1232-4519 Claro BR/Luster white, 1232-4520 Claro BR/Sensuous black

X10a CLARO-CL NAM1 1234-4838	1234-4397 Claro CL/Sensuous black

X10a CLARO-GT NAM1 1234-4844	1234-4392 Claro GT/Sensuous black

X10a COMCEL-CO NAM1 1234-4846	1234-4390 Comcel 3GSM CO/Sensuous black

X10a CUST-AR NAM1 1237-1014	1236-2474 Customized AR/Sensuous black

X10a CUST-BR NAM1 1234-4836	1232-4526 Customized BR/Sensuous black

X10a CUST-GEL NAM1 1234-4820	1234-4388 Customized GEL/Sensuous black, 1234-4389 Customized GEL/Luster white

X10a MSTAR-AR NAM1 1237-0939	1236-7274 Movistar AR/Sensuous black

X10a MSTAR-CL NAM1 1234-8447	1232-4531 Movistar CL/Luster white, 1232-4532 Movistar CL/Sensuous black

X10a MSTAR-GT NAM1 1234-4816	1234-4395 Movistar GT/Sensuous black

X10a MSTAR-PE NAM1 1234-4834	1232-4538 Movistar PE/Sensuous black

X10a ROG-CA NAM1 1233-6929	1232-4506 Rogers Wireless CA/Luster white, 1232-4507 Rogers Wireless CA/Sensuous black

X10a TCEL-MX NAM1 1233-6931	1232-4543 TELCEL GSM MX/Luster white, 1232-4544 TELCEL GSM MX/Sensuous black

X10a TELEF-CO NAM1 1234-6245	1232-4534 Movistar CO/Sensuous black

X10a TELSTRA-AU NAM1 1234-4824	1232-4505 Telstra AU/Sensuous black

X10a TIM-BR NAM1 1234-4840	1232-4546 TIM BR/Sensuous black

X10a VIVO-BR NAM1 1233-6925	1232-4516 Vivo BR/Sensuous black

X10i 3-AT GENERIC 1234-4748	1232-4384 3 AT/Sensuous black

X10i 3-DK GENERIC 1234-6544	1232-4364 3 DK/Luster white, 1232-4365 3 DK/Sensuous black

X10i 3-HK GENERIC 1234-6546	1232-9913 3 HK/Luster white, 1232-9914 3 HK/Sensuous black

X10i 3-IE GENERIC 1234-4750	1235-0102 3 IE/Sensuous black

X10i 3-SE GENERIC 1234-4752	1232-4366 3 SE/Luster white, 1232-4367 3 SE/Sensuous black

X10i 3-UK GENERIC 1232-9592	1232-4287 3 UK/Sensuous black

X10i BOUYG-FR GENERIC 1233-7025	1232-4305 Bouyges Telecom FR/Luster white, 1232-4306 Bouyges Telecom FR/Sensuous black

X10i CHT-TW GENERIC 1239-2540	1238-4530 CHT TW/Sensuous black, 1238-4531 CHT TW/Luster white

X10i CONN-RO VFE 1234-6156	1232-4446 Vodafone RO/Luster white

X10i COSMO-GR GENERIC 1234-7536	1234-2560 Cosmote GR/Sensuous black, 1234-2561 Cosmote GR/Luster white

X10i CUST-AE GENERIC 1238-8010	1238-7987 Customized AE/Sensuous blac, 1238-7988 Customized AE/Luster white

X10i CUST-AU GENERIC 1234-6150	1232-4473 Customized AU/Sensuous black

X10i CUST-BE GENERIC 1238-0870	1232-4403 Customized BE/Luster white, 1232-4404 Customized BE/Sensuous black

X10i CUST-CH GENERIC 1237-0688	1232-4387 Customized CH/Luster White, 1232-4388 Customized CH/Sensuous black

X10i CUST-DE GENERIC 1235-7836	1232-2949 Customized DE/Luster white, 1232-2950 Customized DE/Sensuous black

X10i CUST-GBA GENERIC 1238-3757	1236-2484 Customized GBA/Sensuous black, 1236-2485 Customized GBA/Luster white

X10i CUST-HK GENERIC 1234-6286	1232-9912 Customized HK/Sensuous black, 1232-9915 Customized HK/Luster white

X10i CUST-ID GENERIC 1237-0687	1232-4474 Customized ID/Luster white, 1232-4475 Customized ID/Sensuous black

X10i CUST-IN GENERIC 1237-0692	1235-2964 Customized IN/Sensuous black, 1235-2965 Customized IN/Luster white

X10i CUST-IT GENERIC 1237-0326	1237-4062 Customized IT/Sensuous black, 1237-4063 Customized IT/Luster white

X10i CUST-NBC GENERIC 1234-8465	1235-5522 Customized NCB/Sensuous black, 1235-5523 Customized NCB/Luster white

X10i CUST-NL GENERIC 1234-8547	1232-4405 Customized NL/Luster white, 1232-4406 Customized NL/Sensuous black

X10i CUST-PH GENERIC 1237-0696	1236-2477 Customized PH/Sensuous black, 1236-2478 Customized PH/Luster white

X10i CUST-RU GENERIC 1233-2792	1232-4428 Customized RU/Luster white, 1232-4429 Customized RU/Sensuous black

X10i CUST-SG GENERIC 1237-0334	1232-4480 Customized SG/Luster white, 1232-4481 Customized SG/Sensuous black

X10i CUST-TH GENERIC 1237-0336	1235-4248 Customized TH/Sensuous black, 1235-4249 Customized TH/Luster white

X10i CUST-TW GENERIC 1233-7027	1232-4484 Customized TW/Luster white, 1232-4485 Customized TW/Sensuous black

X10i CUST-UK GENERIC 1235-7379	1231-8220 Customized UK/Sensuous black

X10i CUSTO-IBE GENERIC 1238-3760	1233-8170 Customized IBE/Sensuous black, 1233-8171 Customized IBE/Luster white

X10i CUSTOMIZEDCE1-CE1 GENERIC 1237-8344	1235-5526 Customized CE1/Sensuous black, 1235-5527 Customized CE1/Luster white

X10i CUSTOMIZEDCE3-CE3 GENERIC 1236-4636	1234-6290 Customized CE3/Sensuous black, 1235-5528 Customized CE3/Sensuous black, 1235-5529 Customized CE3/Luster white

X10i CUSTOMIZEDSA-SA GENERIC 1238-6349	1238-7363 Customized SA/Sensuous black, 1238-7364 Customized SA/Luster white

X10i CUSTZA-ZA GENERIC 1238-3758	1234-2565 Customized ZA/Sensuous black

X10i CYTA-CY VFE 1234-6146	1236-2482 Cytamobile Vfe CY/Sensuous black

X10i E+-DE GENERIC 1234-4754	1232-2951 E-PLUS DE/Luster white

X10i GBUL-BG GENERIC 1236-5705	1234-3046 GloBul BG/Sensuous black, 1234-3047 GloBul BG/Luster white

X10i GLOBAL-GGL GENERIC 1232-9897	1233-8175 Customized BAL/Sensuous black, 1234-6287 Customized CE1/Sensuous black, 1235-5525 Customized CE1/Luster white, 1237-1372 Customized BD/Sensuous black, 1237-1373 Customized BD/Luster white, 1238-3340 Customized UA/Sensuous black, 1238-4174 Customized UA/Luster white, 1238-6986 Customized UA/Luster white

X10i GT-FR GENERIC 1233-2796	1232-4307 Customized FR/Luster white, 1232-4308 Customized FR/Sensuous black

X10i KPNMOB-NL GENERIC 1234-8550	1232-4407 KPN Mobile NL/Luster white, 1232-4408 KPN Mobile NL/Sensuous black

X10i M1-SG GENERIC 1237-0329	1232-4490 M1 SG/Luster white, 1232-4491 M1 SG/Sensuous black

X10i MEDI-MA GENERIC 1238-7218	1234-3041 Medi Telecom - Meditel MA/Sensuous black

X10i MENA AR-MEA GENERIC 1238-3759	1232-4557 Customized MEA/Luster white, 1232-4558 Customized MEA/Sensuous black

X10i MENA LA-MEL GENERIC 1238-3756	1232-4556 Customized MEL/Sensuous black, 1232-4559 Customized MEL/Luster white

X10i METEOR-IE GENERIC 1234-4756	1235-0099 Meteor IE/Sensuous black

X10i MKOM-AT VFE 1234-4583	1234-3040 Mobilkom A1 AT/Sensuous black

X10i MSTAR-BE GENERIC 1236-0132	1232-4409 Mobistar BE/Luster White, 1232-4410 Mobistar BE/Sensuous black

X10i MSTAR-ES GENERIC 1234-7515	1233-8168 Movistar ES/Sensuous black, 1233-8169 Movistar ES/Luster white

X10i MTEL-BG VFE 1234-6171	1234-3043 MobilTel EAD BG/Sensuous black, 1234-3044 MobilTel EAD BG/Luster white

X10i O2-DE GENERIC 1233-2794	1232-2957 o2 DE/Luster white

X10i O2-IE GENERIC 1234-4760	1235-0097 O2 IE/Sensuous black

X10i O2-UK GENERIC 1234-4762	1232-4289 O2 Pay monthly UK/Sensuous black

X10i OMUS-PT GENERIC 1234-6159	1238-5640 Optimus PT/Sensuous black

X10i OPTUS-AU GENERIC 1234-4764	1232-4493 Optus AU/Sensuous black

X10i ORA-CARAIB-FR GENERIC 1236-0134	1235-5920 Orange Caraibes FR/Sensuous black

X10i ORA-CH GENERIC 1234-4768	1232-4393 Orange CH/Luster White

X10i ORA-DO GENERIC 1234-6148	1235-5201 Orange DO/Sensuous black

X10i ORA-FR GENERIC 1234-4770	1232-4310 Orange FR/Sensuous black

X10i ORA-PL GENERIC 1234-9617	1232-4431 Orange PL/Sensuous black

X10i ORA-RO GENERIC 1239-5661	1239-6834 Orange RO/Sensuous black

X10i ORA-SK GENERIC 1236-0130	1238-8956 Orange SK/Sensuous black

X10i ORA-UK GENERIC 1234-6152	1232-4290 Orange UK/Luster white, 1232-4291 Orange UK/Sensuous black

X10i ORANGE-AT GENERIC 1234-4766	1232-4391 Orange AT/Sensuous black

X10i PANNON-HU GENERIC 1236-4638	1237-1559 Pannon HU/Sensuous black

X10i PLAY-PL GENERIC 1236-7213	1235-7419 PLAY PL/Luster white

X10i PLUS-PL GENERIC 1234-7169	1232-4433 Polkomtel PLUS PL/Sensuous black

X10i PROX-BE VFE 1234-4591	1233-8166 Proximus BE/Sensuous black

X10i PTC-PL GENERIC 1234-7484	1234-2566 PTC ERA PL/Sensuous black

X10i S-TEL-SG GENERIC 1237-0333	1232-4494 Singtel SG/Luster white, 1232-4495 Singtel SG/Sensuous black

X10i SFR-FR VFE 1234-8436	1232-4312 SFR FR/Sensuous black

X10i SMART-PH GENERIC 1239-6522	1239-4774 Smart Communications PH/Sensuous black

X10i STAR-SG GENERIC 1237-0330	1232-4496 Starhub SG/Luster white, 1232-4497 Starhub SG/Sensuous black

X10i SUN-CH GENERIC 1233-2786	1233-8167 Sunrise CH/Sensuous black, 1235-2932 unrise CH/Luster white

X10i SWISSC-CH VFE 1233-7029	1232-4395 Swisscom CH/Luster white, 1232-4396 Swisscom CH/Sensuous black

X10i TDC-DK GENERIC 1234-9751	1233-8176 TDC Mobil DK/Sensuous black, 1233-8179 TDC Mobil DK/Luster white

X10i TELIA-DK GENERIC 1234-9747	1232-4375 Telia DK/Sensuous black, 1235-6166 Telia DK/Luster white

X10i TMN-PT GENERIC 1237-0324	1236-0796 TMN PT/Sensuous black

X10i TMOB-AT GENERIC 1234-7482	1232-4382 T-Mobile AT/Sensuous black

X10i TMOB-CZ GENERIC 1234-7489	1232-4435 T-Mobile CZ/Sensuous black

X10i TMOB-DE GENERIC 1232-6435	1232-2953 T-Mobile DE/Luster white, 1232-2954 T-Mobile DE/Sensuous black

X10i TMOB-HR GENERIC 1234-7486	1232-4437 T-Mobile HR/Sensuous black

X10i TMOB-HU GENERIC 1234-7487	1232-4439 T-Mobile HU/Sensuous black

X10i TMOB-NL GENERIC 1233-7031	1232-4402 T-Mobile NL/Sensuous black, 1232-4413 T-Mobile NL/Luster white

X10i TMOB-SK GENERIC 1236-4639	1236-2481 T-Mobile SK/Sensuous black

X10i TMOB-UK GENERIC 1238-8324	1232-4293 T-mobile UK/Sensuous black

X10i TNOR-DK GENERIC 1234-9749	1233-8174 Telenor DK/Sensuous black, 1235-6167 Telenor DK/Luster white

X10i TNOR-NO GENERIC 1234-7530	1232-4370 Telenor Mobil NO/Luster white, 1232-4371 Telenor Mobil NO/Sensuous black

X10i TNOR-SE GENERIC 1232-9594	1232-4372 Telenor SE/Luster white, 1232-4373 Telenor SE/Sensuous black

X10i TSON-SE GENERIC 1234-9753	1232-4363 TeliaSonera SE/Sensuous black

X10i VFE-AU VFE 1234-4575	1232-4503 Vodafone AU/Sensuous black

X10i VFE-DE VFE 1234-4587	1232-2955 Vodafone DE/Luster white, 1232-2956 Vodafone DE/Sensuous black

X10i VFE-DE VFE 1239-2736	1232-9883 Retail demo/Vodafone DE/Sensuous black

X10i VFE-ES VFE 1234-6163	1232-2966 Vodafone ES/Sensuous black

X10i VFE-GR VFE 1234-4581	1234-2558 Vodafone GR/Sensuous black, 1234-2559 Vodafone GR/Luster white

X10i VFE-IE VFE 1234-4577	1235-0095 Vodafone IE/Sensuous black

X10i VFE-IT VFE 1240-1465	1239-7590 Vodafone IT/Sensuous black

X10i VFE-NL VFE 1234-4593	1233-7828 Vodafone NL/Sensuous black, 1233-7829 Vodafone NL/Luster white

X10i VFE-NZ_VFE 1234-6142	1235-5919 Vodafone NZ/Sensuous black

X10i VFE-PT VFE 1234-4585	1235-2669 Vodafone PT/Sensuous black

X10i VFE-UK VFE 1234-4579	1232-4285 Vodafone UK/Sensuous black

X10i VIP-HR VFE 1234-6169	1238-8955 Vipnet HR/Sensuous black

X10i VODAC-ZA VFE 1234-4589	1234-2564 Vodacom ZA/Sensuous black