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Manufacturer: Microsoft
Model Name/Number: X1-00.1 (RM-733)
Technologies and Bands:
(2G)
GSM: 850 MHz   1900 MHz  
Certification DateHardware VersionSoftware Version
2012-01-300202, 0302, 0422, 1500, 450006.76
2011-12-170202, 0302, 0422, 1500, 450006.75
2011-11-010202, 0302, 0422, 1500, 450005.96
2011-09-150202, 0302, 0422, 1500, 450005.95
2011-08-090202, 0302, 0422, 1500, 450005.85
2011-05-020202, 0302, 0422, 1500, 450004.55
2011-03-250202, 0302, 0422, 1500, 450004.35
2011-03-150202, 030204.05

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