diff --git a/eive_tmtc/tmtc/acs/star_tracker.py b/eive_tmtc/tmtc/acs/star_tracker.py
index 9703d36..2446baa 100644
--- a/eive_tmtc/tmtc/acs/star_tracker.py
+++ b/eive_tmtc/tmtc/acs/star_tracker.py
@@ -103,6 +103,7 @@ class OpCodes:
     TAKE_IMAGE = "take_image"
     UPLOAD_IMAGE = "upload_image"
     SET_IMG_PROCESSOR_MODE = "set_img_proc_mode"
+    FW_UPDATE = "fw_update"
 
 
 class Info:
@@ -111,6 +112,7 @@ class Info:
     UPLOAD_IMAGE = "Upload Image"
     TAKE_IMAGE = "Take Image"
     SET_IMG_PROCESSOR_MODE = "Set Image Processor Mode"
+    FW_UPDATE = "Firmware Update"
 
 
 class SetId(enum.IntEnum):
@@ -141,6 +143,7 @@ class FileDefs:
     firmware2_1 = "/home/pi/arcsec/firmware/sagitta-2-1.bin"
     firmware22_1 = "/home/pi/arcsec/firmware/sagitta-22-1.bin"
     firmware_origin = "/home/pi/arcsec/firmware/sagitta-origin.bin"
+    FW_SLOT_Q7S = "/mnt/sd0/startracker/updates/sagitta-update.bin"
 
 
 json_dict = {
@@ -158,7 +161,8 @@ json_dict = {
     ),
 }
 
-firmware_dict = {
+FW_DICT = {
+    "0": ("Firmware Update Q7S", FileDefs.FW_SLOT_Q7S),
     "1": ("Firmware Major = 2, Minor = 1", FileDefs.firmware2_1),
     "2": ("Firmware Major = 22, Minor = 1", FileDefs.firmware22_1),
     "3": ("Firmware Origin", FileDefs.firmware_origin),
@@ -630,13 +634,13 @@ def pack_star_tracker_commands(
             + bytearray(json_file, "utf-8")
         )
         q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=data))
-    if op_code == "69":
-        q.add_log_cmd("Star tracker: Firmware update")
+    if op_code == OpCodes.FW_UPDATE:
+        q.add_log_cmd(Info.FW_UPDATE)
         firmware = get_firmware()
         data = (
             obyt
             + struct.pack("!I", StarTrackerActionId.FIRMWARE_UPDATE)
-            + bytearray(firmware, "utf-8")
+            + firmware.encode()
         )
         q.add_pus_tc(PusTelecommand(service=8, subservice=128, app_data=data))
 
@@ -681,9 +685,13 @@ def get_config_file() -> str:
 
 def get_firmware() -> str:
     _LOGGER.info("Specify firmware file")
-    input_helper = InputHelper(firmware_dict)
-    key = input_helper.get_key()
-    firmware = firmware_dict[key][1]
+    bin_select = int(input("Use hardcoded paths (0) or specify path manually (1) ?: "))
+    if bin_select == 0:
+        input_helper = InputHelper(FW_DICT)
+        key = input_helper.get_key()
+        firmware = FW_DICT[key][1]
+    else:
+        firmware = input("Specify absolute path of the firmware update file: ")
     return firmware
 
 
@@ -870,7 +878,7 @@ def add_str_cmds(defs: TmtcDefinitionWrapper):
     oce.add("66", "Star Tracker: Set log level parameters")
     oce.add("67", "Star Tracker: Set log subscription parameters")
     oce.add("68", "Star Tracker: Set debug camera parameters")
-    oce.add("69", "Star Tracker: Firmware update")
+    oce.add(OpCodes.FW_UPDATE, Info.FW_UPDATE)
     oce.add("70", "Star Tracker: Disable timestamp generation")
     oce.add("71", "Star Tracker: Enable timestamp generation")
     defs.add_service(CustomServiceList.STAR_TRACKER.value, "Star Tracker", oce)