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samsung all c series firmware collection
The Samsung Yepp U series is a line of USB key MP3 players made by Samsung and introduced in 2005 with the YP-U1. Samsung used to release a new device every year. Only the YP-U7 was released two years after the U6. It is the largest (7 models) and most durable (7 years) Yepp series. The most famous competitor is the Sony Walkman B series. In South Korea, the iRiver T series is also a main competitor.
All U players have a similar USB key form factor with a 1" 128x64 screen. They all support MP3, WMA and OGG files but some devices support more codecs. The U series is sometimes reproached with not being available in greater capacities than 4 GB and not having expandable storage unlike the famous Sansa Clip series.