My computer does not recognize sansa e250 in msc mode, but will in mtp mode

I can’t access my microsd card unless my player is in msc mode, which won’t work.  I have googled several sites, but none have helped.  I have tried that thing where you lock up the player, hold the middle button while plugging it in. 

SongmakersCry wrote:
I can’t access my microsd card unless my player is in msc mode, which won’t work.  I have googled several sites, but none have helped.  I have tried that thing where you lock up the player, hold the middle button while plugging it in. 

If you have a v1 model (firmware vserion starts with a V01 on the INFO screen) that is the way it works. The card can only be accessed in MSC mode. It cannot be ‘synced’ or accessed in MTP mode. That’s why many veteren Sansa owners who started out with these devices exclusively use MSC mode and drag & drop file transfer method for both internal & external memory. It greatly simplifies things and reduces confusion. Files put on using MTP cannot be seen or accessed via your computer while connected in MSC mode and vice-versa.

And you have the “force MSC mode” procedure slightly off . . . after sliding the HOLD switch towards the headphone jack (orange showing), you press and hold the REW |<< button while connecting the cable into the bottom of the player, not the middle button. Make sure your player is OFF to begin with and it also helps to already have Windows Explorer (My Computer) open beforehand.

If you have a v1 model (firmware version will start with a V01 on the INFO screen) that is the way it works. The card can only be accessed in MSC mode. It cannot be ‘synced’ or accessed in MTP mode. That’s why many veteran Sansa owners who started out long ago with these devices exclusively use MSC mode and drag & drop file transfer method for both internal & external memory. It greatly simplifies things and reduces confusion. Files put on using MTP cannot be seen or accessed via your computer while connected in MSC mode and vice-versa.

And you have the “force MSC mode” procedure slightly off . . . After sliding the HOLD switch towards the headphone jack (orange showing), you press and hold the  REW |<< button while connecting the cable into the bottom of the player, not the middle button. Make sure your player is OFF to begin with and it also helps to have Windows Explorer (My Computer) open beforehand.

I did exactly as you said to do.  Put the player in hold mode, press down the rewide butter while plugging it is.   It did nothing.  The player screen just said Key LOCKED.  System shutdown" and did nothing else.  I tried it several times.

Another thing that I should probably mention is that I just noticed this problem after install rockbox onto it.  Could that have damaged the player somehow?

(I hope not)

When plugged in in msc mode, it still shows up if I go into the sansa media converter.  It also shows up if I go into control panel, portable devices.  I have also tried going into the device manager, and seeing if there is a yellow ! near it.  I did find one by my keyboard (which I fixed) but nothing else.  I don’t think the cable is bad because I can still get it to work with mtp mode

SongmakersCry wrote:
I did exactly as you said to do.  Put the player in hold mode, press down the rewide butter while plugging it is.   It did nothing.  The player screen just said Key LOCKED.  System shutdown" and did nothing else.  I tried it several times.

You are starting with the player OFF, aren’t you? If so, this sounds like a bad cable connection.

SongmakersCry wrote:

Another thing that I should probably mention is that I just noticed this problem after install rockbox onto it.  Could that have damaged the player somehow?

(I hope not)

Now that’s really odd, since Rockbox _ only _ works in MSC mode.

I just borrowed a USB cord, and my computer still does not recognized my player.  I guess that means that problem isn’t caused by the cord.

Hmmm . . . I assume you’ve tried other USB ports on your computer? Or going into Device Manager and see if there’s a problem? If you see a yellow triangle with an exclamation point (!) you should un-install (not dis-able) that device or port, re-boot your computer and then try again.

Yes, I have tried different USB ports.  There was a yellow sign (or whatever you call it) by the device, so I uninstalled and reinstalled it, but it said, 

“this device cannot start. code 10”  I tried several times, and that’s what I keep getting.  I borrowed a similar player from someone, and it works fine, so it means by player is broken, right?

SongmakersCry wrote:

Yes, I have tried different USB ports.  There was a yellow sign (or whatever you call it) by the device, so I uninstalled and reinstalled it, but it said, 

"this device cannot start. code 10"  I tried several times, and that’s what I keep getting.  I borrowed a similar player from someone, and it works fine, so it means by player is broken, right?

You might find this post of interest from a former SanDisk firmware developer.

Or this