Where can I download DS-5 hardware firmware?

You'd better make the firmware version match with the debugger version. Confused about the sequence "this error comes only because I update my host softeware from 5.26 to 5.29.3, and the firmware update automaticlly to 4.34 at the first boot of 5.29.1"

Has the DP been recognized before? It seems the DP can't be recognized by the debugger. Which vendor's chip? You can add the information in file jtag-components.xml under C:\Program Files\DS-5 v5.29.1\sw\debugger\configdb\Components 

<manufacturer>

<name></name>
<id>0x23B</id>

<part>
<id>BA00</id>
<name>ARMCS-DP</name>
<irLength>4</irLength>
</part>

</manufacturer>

And take a try again?

You'd better make the firmware version match with the debugger version. Confused about the sequence "this error comes only because I update my host softeware from 5.26 to 5.29.3, and the firmware update automaticlly to 4.34 at the first boot of 5.29.1"

Has the DP been recognized before? It seems the DP can't be recognized by the debugger. Which vendor's chip? You can add the information in file jtag-components.xml under C:\Program Files\DS-5 v5.29.1\sw\debugger\configdb\Components 

<manufacturer>

<name></name>
<id>0x23B</id>

<part>
<id>BA00</id>
<name>ARMCS-DP</name>
<irLength>4</irLength>
</part>

</manufacturer>

And take a try again?

Yes the DP has been recognized before I upgrade the host software.

Now my DS5 works well when I back to 5.29.1.  Firmware version is 4.34

I don't know if it's a coincidence.

Anyway it works now, Thank you!