OK, there we go.
This is only a warning.
A common mistake made by the owners of these USBasps is to get scared by that warning and waste a bunch of time to install the official firmware to "fix" it. However, the modified firmware that comes on the most common Chinese manufactured USBasps handles the SCK period automatically. So the warning doesn't actually indicate a problem. The problem with doing the firmware update is that the official firmware you will usually replace the Chinese one with is actually inferior to the Chinese one that causes the warning. So you go through a ton of work to get the firmware "updated" only to find that you are having new problems. The Chinese firmware is proprietary, so there is no way to restore it.
Fortunately, some members of this amazing Arduino community have produced an open source version of the firmware that is even better in some specific use cases than the Chinese firmware. But my recommendation is to only update the firmware if you have a specific reason to do it.
More information on all that here:
The problem you are having now will not be fixed by a firmware update, so please don't think about the firmware update until after the current issue has been resolved.
This is the error to focus on. This is usually caused by a wiring problem between the USBasp and the Arduino board. It can not be fixed by -F.
Those problems are covered by the reply above made by UKHeliBob, so please take a close look at it.