v2.5 2022-11-21
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  1.Update GSM Lib, support GTM-205M
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v2.4 2022-11-04
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  1.Update UI, support G-451x Series SMSIO Firmware
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v1.2 2017-12-13
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  1.Update GSM Lib, support GTM-203M&GTM-204M
------------------------------------------------------------------------------

v1.1 2014-01-20
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  1.Update UI
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v1.0 2011-01-28
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  1.First Release
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