Incorrect password after 8.3 update

Thank you, but it's not the network. All other household devices work. This happened right after the ipod updated. I reset router by unplugging it. When that didn't work, I used the reset button, still didn't work. No, I am unable to connect thru other networks as well.

Devices are kindles, roku and not apple phones. As I stated before, other networks do not work. It is not a hardware problem. It worked fine till I upgraded it. When it was done upgrading, that's when I had problems. Seems after researching this problem, it seems to be happening to all apple related products after their update. I'm just looking for a solution. Thank you.

I'm sorry, I guess I wasn't clear in my first post. I have been unable to do a restore. When I tried through the ipod I got verification failed, error connecting to icloud. When I tried through iTunes, I get, "find my ipod must be turned off". When I go to turn it off, I get verification failed, error connecting to icloud. Which is the whole problem-unable to connect after 8.3 update.

I was able to use Recovery mode to use the System Restore (using laptop). Once iPod was wiped I was able to access iTunes (using desktop) where I was able to upload the latest backup which was in October of last year (without 8.3). However, 8.3 is still listed on the iPod which is weird since System Restore is supposed to take it back to factory settings. Wi-Fi is working, no incorrect password is being sent. Although, iPod is unusually slow and I am having a hard time with the app store and iCloud (it only works here and there). We will see what happens tonight when the iPod is turned off..........

Update:

Lost connection again after repeated attempts to connect to app store and itunes which were sporadic. Instead of saying "incorrect password" I was getting unable to connect. Turned it off for the night. Turned it on this morning only to get incorrect password all over again! Reset network settings, reset router, I am not going to do a system restore again just to load the same 8.3 again that doesn't work. Closet apple store is 2 hours away. This is my first apple product, not too happy at the moment but after reading everything, seems I'm not alone. Apple Techs, please help.

No I haven't. However, after reading multiple posts about the problems associated with 8.3 someone posted a suggestion to which I used. I changed my network name and guess what, it worked. For how long it will work is anybody's guess! Thank you for helping.

Saga continues....Seems my iPod only works downstairs, within a few feet of the router. All the "fixes" I tried, didn't help or I should say, yes they did because I was sitting next to the router. I had no clue until I read some of the other Apple owners postings. All problems started IMMEDIATELY after Apple's 8.3 update. Before update I was able to go anywhere in the house and outside with no problems. All my other NON Apple devices work properly throughout my home. I haven't been able to find any kind of statement from Apple about this problem. If I had known this was an issue I wouldn't have wasted my time with the other so called "fixes" I have read. The past few days, my iPod works fine as long as it is sitting next to the router. There's no need for me to enter a password. But, as soon as I move it, I get disconnecting from the network with an incorrect password error message.