From 04e4db68afa78f5ce3daf8d5df22894f73175be8 Mon Sep 17 00:00:00 2001
From: Paul Philippov <themactep@gmail.com>
Date: Wed, 24 Aug 2022 19:16:07 -0400
Subject: [PATCH] ash is not bash, there's no [[ ]] nor ==

---
 general/overlay/usr/sbin/sysupgrade | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/general/overlay/usr/sbin/sysupgrade b/general/overlay/usr/sbin/sysupgrade
index 8d16682d..08bce4ca 100755
--- a/general/overlay/usr/sbin/sysupgrade
+++ b/general/overlay/usr/sbin/sysupgrade
@@ -75,11 +75,8 @@ do_wipe_overlay() {
 download_firmware() {
 	echo_c 33 "\nFirmware"
 	osr=$(get_system_build)
-	if [[ "${osr}" == "lite" ]] || [[ "${osr}" == "" ]]; then
-		build="-"
-	else
-		build="-${osr}-"
-	fi
+	build="-"
+	[ -n "${osr}"] && [ "lite" != "${osr}" ] && build="${build}${osr}-"
 	[ -z "$url" ] && url="https://github.com/OpenIPC/firmware/releases/download/latest/openipc.${soc}${build}br.tgz"
 	echo "Download from $url"
 	[ -z "$HASERLVER" ] && progress="-#" || progress="-s"