Upgrade instruction for 4CH AHD DVR (the version before 20141230) 

1   Pls first choose the file G00XL-EC-AHDVR10X-up-20141230.2.tar£¬ wait for it upgrade automatically, once finish upgrade , pls choose the  Preview Mode. 

2   After finish the first upgrade, pls choose file G00XL-EC-AHDVR10X-update20141230.2.tar for second upgrade£¬Wait for it finish upgrade automatically, then the DVR system can catch the signal with self-adaption function.

3. For latest upgrade, pls choose the file G004L-EC-AHDVR104-update20150311.tar