X-Micro Tech. EVA 310 - Manual (Page 7)

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(8) As the software provided by the original equipment manufacturer has the optimum flash
storage speed, all players with memory less than 128MB cannot be formatted as FAT-32 in
the operating system.
(9) Attention: Because of the different memory calculating method and the player software (firmware) is
stored in the device flash memory and, it will cause the difference between flash memory marked
capacity and real capacity. The real flash memory capacity is lesser than the marked memory
capacity of this device is normal. Due to different firmware size, it will have the different free flash
memory capacity. Please refer the table as below for more details.
Marked capacity Real capacity range Free capacity range after
stored firmware
128MB 122MB~128MB 73MB～127MB
256MB 244MB~256MB 191MB～255MB
512MB 488MB~512MB 428MB～511MB
1GB 953MB~1000MB
879MB～999MB
2GB 1907MB~2000MB 1804MB～1999MB