Hi there. Please follow these simple steps:
1. Download file Theme pack
Theme 1
Theme 2
Theme 3
Theme 4
Theme 5
Theme 6
Theme 7
Theme 8

2. Save file .zip (don't extract) in storage0/Here (out folder)
3. Go to Theme Center
4. Click Button ••• in top right corner
5. import theme
6. choose theme
7. Wait the process


Credits: Source
NOTE: All theme links are from the source.