The word coincidence exists because they happen.. But again, it really comes down to why you are losing internet. If you see what this bug causes, the cpu usage and the memory leak that eventually causes the whole router it to lock up, causing ...
If you already checked for the file and firmware, then that is a next step. However to your post, you describe the internet dropping out, which may not actually be the problem that everyone else is experiencing. In the case of the problem here, wh...
Yes, that (beta) software is expressly for the AX89X. If you are wondering because it has a U instead of an X, they devs have confirmed that is how all the firmwares for it are labeled.
No, people should only be performing a hard reset if they have tried to remove the bad file, as described earlier in this thread, and ensured they have the latest firmware. This has all been covered a few times here.