This fixes the dreaded "lzma error 1" also reported on similar devices
Ref: https://bugs.openwrt.org/index.php?do=details&task_id=3057
Fixes: FS#3057
Signed-off-by: René van Dorst <opensource@vdorst.com>
(cherry picked from commit 12f3d1466ad783fded1747fa2ee521a9bea1ff73)