Ok I was able to update the unit to firmware 7.52
The problem is that there was an OpenAT application still on the unit wich is not compatible with he 7.52
I document it here if people have the same issue.
- So I needed to downgrade the firmware to 7.43 again(which is not on the website. I had to ask an FAE). You don’t need to downgrade the bootloader. I performed the downgrade with Hyperterminal and the 1K Xmodem protocol.
- Then ran the command to remove the Open AT application: AT+WOPEN=4
- Then performed the upgrade to 7.52 with HyperTerminal
- Now the unit is fully responsive in the Development Suite.
Greets,
Gerrit