EC25-EFK original firmware

I have an EC25-EFK module which have been loaded EC21 firmware. Now, i need an original FW version of EC25-EFK.
Please give me an original FW. Thanks

Please confirm the specific model of the module, I did not find a module of this model EC25-EFK, please look at the photo of the module

Hi JouniYang, i have found the original FW of EC25-EFK. Thanks for your supports.
I will contact if i have any trouble in the future.
Best Regards.