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[CainMarko]

I do not have access to nas, single serial port. As I flash the firmware?

[ivan]

Not quite sure what you are talking about here.

Have you read the manual Section 4 - Configuration --> Firmware Upgrade?  It gives the information about how to update the firmware - no serial port required.

[CainMarko]

Sorry for my English, translator Google. The question is I have a brick improper installation of Linux, someone did, buy a second-hand market. I accessed through the serial port, but not as flash the firmware from there.

[ivan]

There are two things you must be aware of;
1) you must have a converter to translate the +5v signals from the serial (or USB) port on the computer to the 3.3v signals required by the DNS-325 serial port.
2) not doing the signal level translation will kill the unit.

I do not want to go into technical details about trying to recover your unit because it needs a good electronics background on your part and there is the language problem (get a word translated incorrectly and your unit might never work again.

[CainMarko]

Using a USB microcontroller, and the voltage delivered is 3.3 ... if that's the whole problem, and insert the firmware from U-boot? Already on space bar + 1, and now what?

[ivan]

go to http://dns323.kood.org/ and select the DNS-325 from the side menu.  This will give you the information on such things as u-boot.

There is also the information wiki with how to and other interesting information.  Unfortunately, it is all in English.

[CainMarko]

I had been on this wiki, and had not learned nothing.

I ask a clear tutorial, something a moron can continue from windows.

if there is none, throw the nas.

[ivan]

I am sorry but that is the simple clear tutorial. 

To do any kind of work at that level you need to know the basics of low level programming.  There is no, do this, then do that because the responses that appear on screen depend on which processor and flash is installed and even what set of instructions are burned in the processor.