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-rw-r--r--modules/admin-mini/luasrc/controller/mini/system.lua3
1 files changed, 3 insertions, 0 deletions
diff --git a/modules/admin-mini/luasrc/controller/mini/system.lua b/modules/admin-mini/luasrc/controller/mini/system.lua
index 3aae6fa2f7..c7bacb2489 100644
--- a/modules/admin-mini/luasrc/controller/mini/system.lua
+++ b/modules/admin-mini/luasrc/controller/mini/system.lua
@@ -149,6 +149,9 @@ function action_upgrade()
-- previous pages should arrange the stuff as required.
if step == 4 then
if has_platform and has_image and has_support then
+ -- Mimetype text/plain
+ luci.http.prepare_content("text/plain")
+
-- Now invoke sysupgrade
local keepcfg = keep_avail and luci.http.formvalue("keepcfg") == "1"
local fd = io.popen("/sbin/luci-flash %s %q" %{