Cannot install DIGI ME firmware on DIGI ME4

We have used Digi Me DC-ME-01T for many years (this is 2 Mb flash part). Recently they said our part will be replaced by Digi Me4 and gave us some samples. However, when using same Digi Discovery tool to install firmware we get following message: Unable to update firmware. Image does not support this hardware.
I downloaded latest Digi Discovery tool but it made no difference.
Thanks in advance for your help.
Spellman High Voltage

what’s the complete part# DC-ME-01T does it have a -S or -C if is -S the firmware for the 4MB is different than the 2MB, you can find it at this location:

Make sure you select this EOS
ConnectPort X2 / Connect ME 4meg / N2S-170 EOS firmware