Copied this from another user in the other thread:

NOTES
What's happening?
The OTA update version might be corrupted. The update will download completely, verify prior to install, go into the Apple update screen, then crash into the "Plug into iTunes" screen. The update bar went as far as about 75% - 80%.

Who is affected?
So far, only iPad Pros, iPhone 6S / S+ and iPhone SEs have complained of corrupt installs. All of those who have complained used OTA updates, so it may affect more.

What do I do?
1.) DO NOT USE OTA UPDATES - it's the most common culprit in the bunch. Avoid it like the plague.
2.) IF YOU ARE UPDATING, USE USB + iTUNES. Those who have been successful have used the iTunes download. Slower, but working.
3.) IF YOU ARE BRICKED - Plug into iTunes and use "Update" to clear out your problem. You don't need to do a full restore, thankfully. I've done a simple update and everything worked swimmingly.

Downloaded at 1am and slept thru it..... Woke up see news, delete the update and redownload again..... Now i better go backup my pong and install it... Later kena i die no backup....

Apple sw once very reliable.... Nowadays cannt be trusted.....

Anybody has problems with the notification sounds after updating to ios10? Now Some application such as whatsapp and fb messenger don't have custom notification sound as per their setting. Is it normal?

I dont have any issue on that. All setting still remain unchange.

After iOS10.0.1, it seems like the battery is draining faster. Anyone?

Give it a few days, things could be running in the background like reindexing etc.

Yea, the setting still remains but the notification sound no longer follows the one in the whatsapp settings. Fb messenger too

reading all this make me sked to update

You're not the only one bro