diff --git a/danio_gcc.sh b/danio_gcc.sh
index 22261eb..e447eef 100755
--- a/danio_gcc.sh
+++ b/danio_gcc.sh
@@ -1,12 +1,5 @@
 #!/bin/bash
 
-#### DOMYŚLNE "master", CZYLI "BLEEDING EDGE"
-[ -z ${binutils_version} ] && export binutils_version="master"
-[ -z ${glibc_version} ] && export glibc_version="master"
-[ -z ${linux_versiob} ] && export linux_version="master"
-[ -z ${gcc_version} ] && export gcc_version="master"
-[ -z ${newlib_version} ] && export newlib_version="master"
-
 runit()
 {
 	set -e
@@ -232,7 +225,9 @@ else
 		done
 		echo "------"
 		read arch
-		break
+		if [ "${arch}" != "" ]; then
+			break
+		fi
 	done
 	while :; do
 		clear || reset
@@ -276,5 +271,53 @@ else
 			*) echo "ONLY USE \"1\" or \"2\"!"; sleep 2 ;;
 		esac
 	done
+	if [ "${CUSTOMBUILD}" -ne "0" ]; then
+		while :; do
+			clear || reset
+			echo "Please type gcc version or type \"master\" then press enter"
+			wget --no-check-cert -q -O - "http://api.github.com/repos/gcc-mirror/gcc/tags" | jq -r .[].name | sort
+			read gcc_version
+			export gcc_version="${gcc_version}"
+			if [ "${gcc_version}" != "" ]; then
+				break
+			fi
+		done
+		while :; do
+			clear || reset
+			echo "Please type binutils-gdb version or type \"master\" then press enter"
+			wget --no-check-cert -q -O - "http://api.github.com/repos/bminor/binutils-gdb/branches" | jq -r .[].name | sort
+			read binutils_version
+			export binutils_version="${binutils_version}"
+			if [ "${binutils_version}" != "" ]; then
+				break
+			fi
+		done
+		while :; do
+			clear || reset
+			echo "Please type linux (headers for gcc) version or type \"master\" then press enter"
+			wget --no-check-cert -q -O - "http://api.github.com/repos/torvalds/linux/tags" | jq -r .[].name | sort
+			read linux_version
+			export linux_version="${linux_version}"
+			if [ "${linux_version}" != "" ]; then
+				break
+			fi
+		done
+		while :; do
+			clear || reset
+			echo "Please type glibc (gnu-library-c) version or type \"master\" then press enter"
+			wget --no-check-cert -q -O - "http://api.github.com/repos/bminor/glibc/tags" | jq -r .[].name | sort
+			read glibc_version
+			export glibc_version="${glibc_version}"
+			if [ "${glibc_version}" != "" ]; then
+				break
+			fi
+		done
+	else
+		export binutils_version="master"
+		export glibc_version="master"
+		export linux_version="master"
+		export gcc_version="master"
+		export newlib_version="master"
+	fi
 	runit "${arch}-danio-${BASE}" "${BINARY}"
 fi