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 Posted: Saturday Oct 26th, 2013 12:45 pm
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ident



Joined: Wednesday Aug 9th, 2006
Location: Singapore
Posts: 3494
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You need to purchase the GSM4 submodule and a U2 EEPROM 24C256
You can then upgrade  the firmware to GSM4 via the intermediate firmware GSM 7.029 as described

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