hi
several times tried to update latest firmware by net and got "1-21 error!" and "0-83 error!" errors.
Downloaded the firmware update from Pioneer unziped&placed the unzipped files on the thumb drive. updating process stopped at 9% and "1-21 error!" and "0-83 error!" errors.
right now i have only "update firmware by net or usb" message only.
whats the problem with this receiver?

You need to contact Pioneer support. There was apparently a large number of defective TI chipsets and you might be able to get your receiver repaired, even if it is beyond the warranty period.

thanks!

Did you try a factory reset before the USB update?
If you did and had no luck, it's off to service.

i found two ways:
[Restarting Pioneer receiver]
To restart the unit, turn it to standby, and then press [STANDBY/ON] on the main unit for at least 5 seconds. (The unit’s settings will be maintained.)
If there is no improvement even after the unit is restarted, try disconnecting and reconnecting the power cords of the unit and connected equipment.

[Resetting Pioneer receiver]
1. While holding down [AUTO/DIRECT] on the main unit, press [STANDBY/ON] on the main unit.
2. "Clear" appears on the display and the unit returns to standby. Do not unplug the power cord until "Clear" disappears from the display.

i tried only reset

Is it hardwired to the network, or are you using WiFi? Hardwire it and see if it works.

when hardwired to the network i have "downloading..." message during 3-5min and "1-21 error!" and "0-83 error!".
when i try to flash from usb i have "upgrading... xx%". but after 9% i got the same "1-21 error!" and "0-83 error!".
i found 11 firmwares (according to [Link: pioneer-audiovisual.eu]). may be i have to try not the last but first one?