diff --git a/bsp/board_fonera.bsp b/bsp/board_fonera.bsp
index 892403e..c9768c6 100644
--- a/bsp/board_fonera.bsp
+++ b/bsp/board_fonera.bsp
@@ -3,7 +3,7 @@ machine=fonera
 target=$builddir/$machine
 
 board_prepare() {
-	echo "nothing todo" > /dev/null
+    cat ./bsp/$machine/000-squashfs-image-params.patch | patch -p0 -d $target
 }
 
 board_prebuild() {
diff --git a/bsp/fonera/000-squashfs-image-params.patch b/bsp/fonera/000-squashfs-image-params.patch
new file mode 100644
index 0000000..5025ced
--- /dev/null
+++ b/bsp/fonera/000-squashfs-image-params.patch
@@ -0,0 +1,17 @@
+Index: include/image.mk
+===================================================================
+--- include/image.mk	(Revision 35298)
++++ include/image.mk	(Arbeitskopie)
+@@ -42,10 +42,10 @@
+   JFFS2OPTS += -x lzma
+ endif
+ 
+-SQUASHFS_BLOCKSIZE := 256k
++SQUASHFS_BLOCKSIZE := 64k
+ SQUASHFSOPT := -b $(SQUASHFS_BLOCKSIZE)
+ SQUASHFSCOMP := gzip
+-LZMA_XZ_OPTIONS := -Xpreset 9 -Xe -Xlc 0 -Xlp 2 -Xpb 2
++LZMA_XZ_OPTIONS := -Xpreset 1
+ ifeq ($(CONFIG_SQUASHFS_LZMA),y)
+   SQUASHFSCOMP := lzma $(LZMA_XZ_OPTIONS)
+ endif