I bought YamahaRXV375 online. Can anyone help with firmware?

If you were able to post this question online from the computer in question, you have internet access. If this was posted from another computer, you don't have access at all so contact your internet provider. If it was posted from that computer, a trip to the store for it to be checked for corruption and/or viruses/malware is recommended. If you want someone to remotely access your computer to help, internet access is necessary so you need to determine that first.

just save your data and then reform the hard drive. Home Mail Help

In order to run isos which one downloads online one must first install custom firmware on your psp. The only way to do this is to downgrade your psp to 1.5 which can only be accomplished by using a pandoras battery. These are extemely easy to make and u can look on any website to find directions. They can also be bought for relatively cheap if u dont like the idea of cutting your own battery open. Please note that if u do decide to downgrade and install custom firmware ur psp runs the risk of bricking which will completely break it. Installing custom firmware voids the warrenty so if it does brick you can do nothing about it, do so at your own risk.

you need to reset, ie defaults (1st go to control panel on safe mode, and reset ie settings)
2nd (on safe mode reset firewall exceptions)
3rd clean temp files
4rd check antivirus stability/functions
5nd reboot

Sounds like corrupt firmware. If you can get to a page to update firmware, download the latest and go for it. If not, try reset again. If still ng, contact manufacturer or purchase a new AP.

Hope this helps!

You can see if you can rollback to the previous firmware -usually you can't - check the forums on Creative forums - plenty of people have this problem- no solutions that i can see

for mat your memory card if you have one and goto options and reset to factory options

If you can get into the built in webpage to upgrade firmware I would suggest upgrading it. Sounds to me like corrupted firmware. If you can I would return the device. I had a similar issue with a linksys AP and I found out that the Firmware was scrubbed. Had to send it back to the manufacture.