Using different bandwidths than the region accepted ones


I am developing an IoT product with a llcc68 based Lora chip. It has really good Lora performance but LoraWan is more restrictive with the channels, bandwidths and SFs to use. The good potential of this chip is working with large SF and BW. I would like to know if there is any possibility to skip some of the LoraWan protocol in EU868 (like working in SF10BW250 or SF11BW250). Suggestions are very welcome.

Thank you.