diff --git a/src/install.sh b/src/install.sh
index c3739b5..353de6b 100644
--- a/src/install.sh
+++ b/src/install.sh
@@ -46,6 +46,7 @@ info "$msg" && html "$msg"
 fKill "progress.sh"
 
 (( rc == 4 )) && error "Failed to download $BOOT , network failure!" && exit 60
+(( rc == 8 )) && error "Failed to download $BOOT , server issued an error response!" && exit 60
 (( rc != 0 )) && error "Failed to download $BOOT , reason: $rc" && exit 60
 [ ! -s "$TMP" ] && error "Failed to download $BOOT" && exit 61