Question about SanDisk Sansa c250 (2 GB) MP3 Player (SDMX7-2048)

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Firmware & Sansa m250

Whenever I try to sync songs from Media Player 11, I get "It's not possible to obtain the device certificate. Please contact the device manufacture for a firmware update or for other steps to resolve this problem." I've downloaded updates and don't know what else to do. Tech support for sansa is awful.


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Re: Firmware & Sansa m250

Ok go to my music on the start menu then you should have all your music there just copy and paste to mp3 or mp4 u can do this by going to my computer and see the name of mp3 or it will say under local hadrive mass storage ddevice if you need any more help contact me at good luck!!

Posted on Jan 01, 2008

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When transfering the songs from computer to player. First, sync device before transfering. Only do this the very first time. If you try to sync with songs already on the player, they will be erased.

To test the device. Open your comuters music file folder, keep folder open, than go to start menu, go to my computer and open the folder (D: or F: folder) It will have your player listed there.

Now with both folders open, take a song from the music folder, drag it to the sansa folder and drop it in there. It should be added to player.

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First you need to set your Sansa m250 mp3 player to MTP mode:

) Tap your menu button and select "Settings" > "USB".
2) On this screen, make sure that there is a check next to "Auto Detect" and NOT "MSC".

Note: Music that was transferred to the player in "MSC" (Mass Storage Class) mode will not be accessible once the player is put into MTP mode.

However, the music can still be accessed by switching the player back to MSC mode.

To transfer a playlist using Windows Media Player version 10:

- Make sure device is showing as an "audio device" and in MTP mode
- Create a playlist by right clicking a song in the library, add to>additional playlists>new or by saving a now playing list
- Select the Sync tab and click "Sync settings"
- Check "Synchronize device automatically"
- Set "View" to "All Playlists"
- Place a check next to the playlists they want to transfer to device
- Media Player should then sync those lists once you hit OK.
Once you Sync for the first time a new folder "Playlists" will appear in your m250 using Windows Explorer. Once that folder is created you can even use Windows Explorer alone to create playlists, all you have to do is right click on a song and choose create a playlist. Double click on playlist > Reference Tab, on the window you simply drag and drop your songs.

Hope this helps

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Download the Sansa Recovery Tool from the Sansa website.
Format - Erases Everything: Connect your Sansa player to the computer and open Windows Media Player. Click on the Sync tab. Pull down the drop down menu underneath the Sync tab by moving your cursor over the Sync tab and left clicking on the little black arrow underneath the Sync tab. Highlight "Sansa 1GB" (wording may vary slightly), and then select "Format." - this should erase everything.
Firmware Upgrade- Erases Everything: Get the latest firmware upgrade from Sansa - it updates the firmware and erases every song in the player all at once. Note: this method doesn't work if already have the latest firmware. Go to this website and click "Firmware Updater" to find out:
-Tha Mp3 Doctor

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It could be a device certificate errror..what i would recommend you to get a firmware upgrade for your device...if that doesnt do it i would recommend you to contact sandisk...its a common problem with your device...hope that help your problem./..

Please rate accordingly...

Thank You

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yea it is compatible with sounds like you are having some firmware issue...what I will recommend you to do is to get the latest firmware for the device...and make sure you have the device in MTP mode..once you have it in MTP mode WMP should recognize and you shouldnt have any

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The certificate must be obtained by syncing the device to the music service from which you obtained the songs.

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I have the same issue. I hope we get an answer to the issue.

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