The R4 DS Cartridge is the current top-of-the-line in DS SLOT-1 flash carts. It is Just an amazing little device like original DS cart size, it is a complete solution with no need to purchase any a additional components or deal with any messy software and truly the easiest media enhancer you have ever done; To simply put it, this is a must have peripheral for any regular DS/DS lite owner.

Posted by Unknown on 13th Aug 2010
company will not answer email
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Yopool.com:
We answer every email within 24-48hours but there are some cases that you may not get the email.
1. Your email setting has screened out sales@yopool.com
2. Your email server has screened out xxx@yopool.com, for example, we failed in sending emails to xxx@sandstonehillspotterywholesale.com
3. You may not have sent email to sales@yopool.com or account@yopool.com correctly
Thanks. If possible, pls tell your email address.
Posted by Unknown on 14th May 2010
I bought 10 from yopool about 3 weeks ago and they all work perfect. just keep in mind though a Kingston or Sandisk 2GB MicroSD card is the maximum memory for this r4.
Posted by Unknown on 31st Mar 2010
tryed all downloads can not get it to work
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Yopool:
Tracked your order history, found two kinds of cards had been ordered, DSTT and R4i ultra.
For r4i ultra, there is no other kernel but V1.55 from http://www.r4ultra.com/download.htm, pls try it firstly. Do remember to save only one kernel on one MicroSD card, and format it into FAT32 before saving kernel.