diff --git a/en/u-boot-settings.md b/en/u-boot-settings.md
index 72daade..466cf07 100644
--- a/en/u-boot-settings.md
+++ b/en/u-boot-settings.md
@@ -23,6 +23,8 @@ To be continued...
 Mandatory setting, available in all OpenIPC bootloaders
 
 ### sensor
+The type of sensor used on the device is set automatically in most cases
 
-
+### upgrade
+Specify the full path to the archive with custom OpenIPC firmware in .tgz format