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UCM/GSM 7.029
 Moderated by: slychiu
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 Posted: Friday Sep 27th, 2013 01:41 pm
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Joined: Saturday Apr 29th, 2006
Location: Singapore
Posts: 5502

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GSM 7.029 firmware allows UCM/GSM3 firmware to be upgraded to UCM/GSM4 firmware even though the two types are different
With GSM 7.029 firmware installed, the firmware can be upgraded to UCM/GSM4 firmware
However, a U2 EEPROM  24LC256 is needed in the U2 IC socket and the GSM Submodule needs to be SIM900. See Upgrading information at

New Features
  1. Can be upgraded to GSMv4 firmware which is a different Type
  2. Implemented Serial Number for future use

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