@evelina : << previous problem of not saving data was solved by changing the onion processor. << Did you try following @György-Farkas 's advise to recover the Omega2s by flashing the firmware again, in your previous thread? << cd /tmp wget http://repo.onioniot.com.s3.amazonaws.com/omega2/images/omega2p-v0.3.2-b239.bin Check the downloaded file: md5sum omega2p-v0.3.2-b233.bin 45d6b0be4eb3fb4a0396f417c087d838 omega2p-v0.3.2-b239.bin sysupgrade -n omega2p-v0.3.2-b239.bin << Didn't the above instructions solve "file missing problem" ? I am watching the difficulties you report, since I may also face the similar problems later. As @crispyoz asked yesterday, please post the relevant portion of your schematic that shows Omega2s to the SD card reader wiring. Thanks..