boot problem with Voltcraft MSO-5062B

[erulogoss]

At first I would like to say hello and apologize for my poor english.
I got from my father Voltcraft MSO-5062B osciloscope which does not want to boot (shows only blue screen for a while and reboot). Is there any chance to bring it back to the living ??

[flash2b]

Maybe this guide will help you to reset the device:
https://marcowuen.wordpress.com/2013/09/01/dso-hacking-quick-guide-voltcraft-dso3062c-hantek-dso5062b-tekway-dst1062b/

[cssack]

Hello, i am sorry for my english too .

I managed to find a solution for the problem. But let me begin with how the problem actually started.
I tried to patch my firmware of the device with the firmware I downloaded from here:
http://voltcraftdownload.info/Default.aspx?modelno=MSO-5062B

After that the device wasn't able to boot anymore.

So I opened the device and connected with my raspberry pi to the UART inside the device.
I found the pins for the uart near the "usb" port at the backside of the device.
I measured the voltage of the four pins and found VCC (3.3V), GND(0V), TX(2.5 -3.3) and RX(~0.7V) during boot time.
Be careful with the high voltage.

Then I looked into the serial data (8N1 115200 baud rate) and saw something like this:
mkdir <SOMEDIRECTORY> failed directory already exists
Segmentation fault

Then I deleted the <SOMEDIRECTORY> and after that, the device booted properly.

Hopefully this helps some one in a similar position.

Don't hesitate to ask further questions