You can download the trial version on IAR website.
The following table shows the comparison:
If you face the problem that J-link is not working, you can enter CRP DISABLED Mode to activate J-link. Refer to the steps below to enter CRP DISABLED Mode：
1. Keep pressing the button beside CON2 as follows
2. Press the button beside CON1
3. Release the botton that is hold on step 1
Show up a device with the name “CRP DISABLED” now
You can find a file “firmware.bin” when you open it. And it is the DAP firmware that Ameba uses.