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This seems to be issue on Raspberry Pi side. Can you check this link: How to Fix the 'No Space Left on Device' Error on Linux - Make Tech Easier
To program the device, you have to send HCI commands over UART to CYBT-343026 board. Refer /20706-A2_Bluetooth/doc/WICED-HCI-Control-Protocol.pdf for more details.
FYI, we have not tested programming of this module with Raspberry Pi as of now.