diff --git a/SD_ROOT/wz_mini/bin/dropbear b/SD_ROOT/wz_mini/bin/dropbear
index a0a17bf..a7b1c1a 100755
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diff --git a/SD_ROOT/wz_mini/bin/dropbearconvert b/SD_ROOT/wz_mini/bin/dropbearconvert
index c81b1d8..6dbbadc 100755
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diff --git a/SD_ROOT/wz_mini/bin/dropbearkey b/SD_ROOT/wz_mini/bin/dropbearkey
index c07ca20..14b43c4 100755
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diff --git a/SD_ROOT/wz_mini/bin/sftp-server b/SD_ROOT/wz_mini/bin/sftp-server
new file mode 100755
index 0000000..632933c
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