How do l update my Samsung AV receiver model HW-E5500 firmware. Its displaying PROTECT message

The error code M1.04/19912A50 on your Onkyo AV receiver HT-R398 typically indicates a firmware or software-related issue. To resolve this problem and reset your receiver, you can follow these steps:

1. Power Cycle the Receiver:
   • Turn off the receiver and unplug it from the power source.
   • Wait for about 10-15 minutes to ensure that all internal components have fully powered down.
   • Plug the receiver back in and turn it on.
2. Factory Reset:
   • If the error persists after power cycling, you may need to perform a factory reset to restore the receiver to its default settings. Note that this will erase all your custom settings, so make sure to back up any important configurations if possible.
   • To perform a factory reset, refer to your receiver's user manual for specific instructions. Typically, this involves pressing and holding specific buttons on the front panel while powering on the receiver. The exact combination of buttons may vary by model.
3. Firmware Update:
   • Ensure that your receiver's firmware is up to date. Visit the Onkyo website and check if there are any firmware updates available for your HT-R398 model. If updates are available, follow the provided instructions to update the firmware.
4. Contact Customer Support:
   • If the issue persists after trying the above steps, it's a good idea to contact Onkyo customer support or visit their official support website. They may be able to provide specific guidance or solutions for the error code you're encountering.

Remember to consult your receiver's user manual for model-specific instructions, as the steps to reset or update firmware can vary between different Onkyo models. Additionally, be cautious when performing a factory reset, as it will erase all settings and return the receiver to its default state.

- Firmware update doesn't start or doesn't complete
? Receiver doesn't power up after the update.
? Error message appeared when confirming the firmware version.
Recovery method using USB method:
1. Unplug the AC power cable from wall outlet.
2. Insert the USB thumb drive which has the firmware data stored inside, into the USB port located on the front panel.
3. Press and hold the INFO key and keep it pressed while you plug the AC power cable back into the wall outlet again.
" USB UPDATE " will appear on the front display. Then, release the INFO key.
4. The update will start automatically.
5. When " UPDATE SUCCESS " appears on the display, firmware update is completed.
Power off the receiver and remove the USB thumb drive.
6. Confirm updated firmware version.

- Error message appeared during the update
Cause: For some reason, the receiver can't read the firmware data.
Method: For your solution, check the following
[Update through Internet]
? Check Internet connection.
Check if the Internet connection is working by playing an Internet radio station.
(See owner's manual for details)
[Update by USB thumb drive]
? USB thumb drive is connected properly to the receiver.
? USB thumb drive is not password protected.
(AV receiver cannot read data from a security protected USB thumb drive)
? Make sure the USB thumb drive is inserted before the receiver is powered on for the update.
? The firmware data is stored in the root directory of the USB thumb drive.
? There is no other data except the firmware data in the USB thumb drive.
? No folders are created in the USB thumb drive.
Else, retry the update by USB using another USB thumb drive.

Receiver could be in protect mode or suffering from failure of amplifier chain component(s)

Check your speakers and cables. Make certain the speakers can take the power being applied and match the ohm range of the amp.

what error are you getting? Never heard of 'device error'

I think the usb port on this model is only for updates. You can't actually play anything through there

This indicates a short in the audio output stage of the amplifier, check speaker wires for shorts, if okay! you will need to get the amp assessed.

Your set is in trouble my dear friend.
Protection will appear because the processor sense that you have a faulty parts on your unit.
To avoid further damaged, your system shut it off automatically.
The main reason is your Power amplifier I.C., it is shorted,need a replacement.
I"ve strongly adviced you to look for a qualified technician or electronic shop to fix your problem.
Good day!

The power supply is damaged and needs to be serviced. You have done exactly what you should have to test for an outside issue, it's the receiver.