If you've updated your system using an OTA and installed KernelSU on the other slot in the manager, it's important to understand the implications of not having the boot.img file of the current OTA update. KernelSU, being a custom kernel manager, allows you to manage multiple kernels on your device, which can be useful for testing and maintaining different versions of your operating system. However, if you do not have the original boot.img file of the latest OTA update, you might face some challenges in applying updates or reverting to the stock firmware if needed.