Firmware RG520NEUDC-M20-SGASA

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Dear colleagues! To reanimate modem RG520NEUDC-M20-SGASA, firmware RG520NEUDCR01A05M4G _ 01.001.01.001 or RG520NEUDCR01A07M4G _ is very necessary 01.001.01.001 help please with this question!!