Question about RCA OPAL M4001 MP3 Player

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"KeysLocked" After unit powers up this is the message I get.

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Unlock the player by disengaging the HOLD switch on the side of the player.

Posted on Jan 17, 2009

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Posted on Jan 02, 2017

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I have my coby MP 600 MP3 player, but one day i make a scan and after when i start it i can not acces with anything, it posts a message error: file system error. please help me to solve this problem. Thank...

It sounds like the Coby operating system is corrupted.

I'm going to recommend you try the following procedure with one catch; I'm assuming you can turn the unit on and at least get a menu. If not this procedure isn't going to work.

NOTE: The following procedure will erase everything on your Coby so be aware!

Essentially, we're going to reformat the unit using Coby's own format routine.

1. Power Unit On
2. Scroll through your main menu going to your right. From "Music" ---> to "Settings"
3. Under "Settings" you will have another menu. Look at the bottom choice called "Sys Tools"
4. Select "Sys Tools" and you will have a series of options, choose the second option "Format"
5. Select "Format" and follow the prompts
6. Wait for the routine to complete
7. Power unit down
8. Power unit back up and reconnect to PC
9. Use Windows Explorer or My Computer to see if the unit is recognized, and it should be at this point.
10. You should be set

For some reason, the operating system for the Coby gets corrupted and this is the only way I know to fix it short of sending the unit in for repair, which isn't an option really. (Cheaper to buy a new one)

Hope this helps you or anyone else that has unexplainable problems connecting to the Coby MP-610 / MP-620.

Oct 19, 2010 | Coby MP-610 MP3 Player

1 Answer


Same thing happened to me.
The thing wouldn't power on or I'd get a "DEVICE ERROR" message on the LCD.

When I pushed the level button on the left side of the unit along with the power button the unit turns on.
I have no idea what the problem is.

Oct 10, 2009 | Tascam MP-GT1 MP3 Player

1 Answer

Low battery message when the battery is fully charged

it looks like a 350mah 3.7 volt battery lithium ion type

their is a firmware update for it but i doubt you'll need to update it and you can brick the unit if it is a bad flash and the power failed not recommend at all. best bet/ plug into the pc turn unit off, follow steps to backup files on unit and factory reset the unit. then try and put files back on only if it is able to stay powered long enough, from what i gather the unit has open source firmware installed. so it is easily possible that it became corrupted by a bad file instruction call or a bad api interface modal. good luck with it. note: flashing the unit is almost never recommended.

Oct 05, 2009 | SanDisk Sansa c200 MP3 Player

1 Answer

Key locked mode is on

To unlock it Press and Hold the Home button until an “Unlocked” Message appears. also Press and hold the home button to lock the unit, this can only be preformed when the unit is powered. good luck.

Oct 01, 2009 | SanDisk Sansa E280 MP3 Player

1 Answer

My brand new mixmax won't power on

How unfortunate. Its probably a malfunction with your player. When I plug my daughters mix max into the usb it says do not remove. I waited and removed it anyway and it worked fine. I suggest you take it back and get a new one.

Dec 27, 2008 | Disney Mix Max Digital Media Player

3 Answers

Need Help

Press the middle key and menu key at the same time until the apple screen comes on. This will reset your settings but usually when my iPod does something funky like that I just do that and it's fine. If that doesn't work, contact your local Apple store.

May 02, 2008 | Apple iPod nano

2 Answers

Device not found

try to replace the usb cord of your ipod.

Dec 21, 2007 | Apple iPod MP3 Player

1 Answer

Cannot turn on

You can reset your Lyra player at any time by depressing and continually holding the power button for a minimum of 10 seconds. Upon releasing of the power button, the unit should reset. If it does not, we recommend that you try again by depressing and holding the power button for up to 20 seconds. Constant pressure is required to depress the button for this duration. Second, download the latest firmware for your player. As for the unit freezing I figured out that it has to do with WMA files. try to re-coded your WMA's to MP3. I think it just has to do with the firmware not liking WMA very much. Use MP3 format only and I think you will be fine.

Jan 13, 2006 | RCA RD2826 MP3 Player

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