diff --git a/CHANGELOG.md b/CHANGELOG.md
index b3fea248..496d9cfe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,9 @@ will consitute of a breaking change warranting a new major release:
 - IMTQ: Sets were filled with wrong data, e.g. Raw MTM was filled with calibrated MTM measurements.
 - Set RM3100 dataset to valid.
 - Fixed units in calculation of ACS control laws safe and detumble.
+- Bump FSFW for change in Countdown: Use system clock instead of reading uptime from file
+  to prevent possible race condition.
+- GPS: No fix for 30 minutes considered a faulty now instead of 5 hours.
 
 ## Added
 
diff --git a/fsfw b/fsfw
index 245886c5..6e17e455 160000
--- a/fsfw
+++ b/fsfw
@@ -1 +1 @@
-Subproject commit 245886c55500b9e70ba71eab68c46d44af9f6836
+Subproject commit 6e17e45506b0d9834d3ae9ded6f044e13e3c4abd
diff --git a/linux/devices/AcsBoardPolling.cpp b/linux/devices/AcsBoardPolling.cpp
index a9128242..947d0730 100644
--- a/linux/devices/AcsBoardPolling.cpp
+++ b/linux/devices/AcsBoardPolling.cpp
@@ -4,6 +4,7 @@
 #include <fsfw/globalfunctions/arrayprinter.h>
 #include <fsfw/tasks/SemaphoreFactory.h>
 #include <fsfw/tasks/TaskFactory.h>
+#include <fsfw/timemanager/Stopwatch.h>
 #include <fsfw_hal/devicehandlers/devicedefinitions/gyroL3gHelpers.h>
 #include <fsfw_hal/devicehandlers/devicedefinitions/mgmLis3Helpers.h>
 #include <fsfw_hal/linux/UnixFileGuard.h>
@@ -31,15 +32,19 @@ ReturnValue_t AcsBoardPolling::performOperation(uint8_t operationCode) {
     semaphore->acquire();
     // Give all tasks or the PST some time to submit all consecutive requests.
     TaskFactory::delayTask(2);
-    gyroAdisHandler(gyro0Adis);
-    gyroAdisHandler(gyro2Adis);
-    gyroL3gHandler(gyro1L3g);
-    gyroL3gHandler(gyro3L3g);
-    mgmRm3100Handler(mgm1Rm3100);
-    mgmRm3100Handler(mgm3Rm3100);
-    mgmLis3Handler(mgm0Lis3);
-    mgmLis3Handler(mgm2Lis3);
-    // To prevent task being reactivated by tardy tasks
+    {
+      // Measured to take 0-1 ms in debug build.
+      // Stopwatch watch;
+      gyroAdisHandler(gyro0Adis);
+      gyroAdisHandler(gyro2Adis);
+      gyroL3gHandler(gyro1L3g);
+      gyroL3gHandler(gyro3L3g);
+      mgmRm3100Handler(mgm1Rm3100);
+      mgmRm3100Handler(mgm3Rm3100);
+      mgmLis3Handler(mgm0Lis3);
+      mgmLis3Handler(mgm2Lis3);
+    }
+    // To prevent task being not reactivated by tardy tasks
     TaskFactory::delayTask(20);
   }
   return returnvalue::OK;
@@ -110,7 +115,6 @@ ReturnValue_t AcsBoardPolling::sendMessage(CookieIF* cookie, const uint8_t* send
       if (req->mode == acs::SimpleSensorMode::NORMAL) {
         adis.type = req->type;
         adis.countdown.setTimeout(adis1650x::START_UP_TIME);
-        adis.countdown.resetTimer();
         if (adis.type == adis1650x::Type::ADIS16507) {
           adis.ownReply.data.accelScaling = adis1650x::ACCELEROMETER_RANGE_16507;
         } else if (adis.type == adis1650x::Type::ADIS16505) {
diff --git a/linux/devices/GpsHyperionLinuxController.cpp b/linux/devices/GpsHyperionLinuxController.cpp
index 3b396504..3beb0d87 100644
--- a/linux/devices/GpsHyperionLinuxController.cpp
+++ b/linux/devices/GpsHyperionLinuxController.cpp
@@ -19,9 +19,7 @@
 
 GpsHyperionLinuxController::GpsHyperionLinuxController(object_id_t objectId, object_id_t parentId,
                                                        bool debugHyperionGps)
-    : ExtendedControllerBase(objectId), gpsSet(this), debugHyperionGps(debugHyperionGps) {
-  timeUpdateCd.resetTimer();
-}
+    : ExtendedControllerBase(objectId), gpsSet(this), debugHyperionGps(debugHyperionGps) {}
 
 GpsHyperionLinuxController::~GpsHyperionLinuxController() {
   gps_stream(&gps, WATCH_DISABLE, nullptr);
@@ -196,8 +194,8 @@ ReturnValue_t GpsHyperionLinuxController::handleGpsReadData() {
     if (mode != MODE_OFF) {
       if (maxTimeToReachFix.hasTimedOut() and oneShotSwitches.cantGetFixSwitch) {
         sif::warning << "GpsHyperionLinuxController: No mode could be set in allowed "
-                     << maxTimeToReachFix.timeout / 1000 << " seconds" << std::endl;
-        triggerEvent(GpsHyperion::CANT_GET_FIX, maxTimeToReachFix.timeout);
+                     << maxTimeToReachFix.getTimeoutMs() / 1000 << " seconds" << std::endl;
+        triggerEvent(GpsHyperion::CANT_GET_FIX, maxTimeToReachFix.getTimeoutMs());
         oneShotSwitches.cantGetFixSwitch = false;
       }
       modeIsSet = false;
diff --git a/linux/devices/GpsHyperionLinuxController.h b/linux/devices/GpsHyperionLinuxController.h
index df08d8a4..f00724bd 100644
--- a/linux/devices/GpsHyperionLinuxController.h
+++ b/linux/devices/GpsHyperionLinuxController.h
@@ -23,7 +23,8 @@
  */
 class GpsHyperionLinuxController : public ExtendedControllerBase {
  public:
-  static constexpr uint32_t MAX_SECONDS_TO_REACH_FIX = 60 * 60 * 5;
+  // 30 minutes
+  static constexpr uint32_t MAX_SECONDS_TO_REACH_FIX = 60 * 30;
 
   enum ReadModes { SHM = 0, SOCKET = 1 };
 
@@ -79,7 +80,6 @@ class GpsHyperionLinuxController : public ExtendedControllerBase {
 
   bool debugHyperionGps = false;
   int32_t noModeSetCntr = 0;
-  Countdown timeUpdateCd = Countdown(60);
 
   // Returns true if the function should be called again or false if other
   // controller handling can be done.
diff --git a/linux/devices/Max31865RtdPolling.cpp b/linux/devices/Max31865RtdPolling.cpp
index 6cfb2000..dad75411 100644
--- a/linux/devices/Max31865RtdPolling.cpp
+++ b/linux/devices/Max31865RtdPolling.cpp
@@ -234,7 +234,6 @@ ReturnValue_t Max31865RtdPolling::sendMessage(CookieIF* cookie, const uint8_t* s
     case (EiveMax31855::RtdCommands::ON): {
       if (not rtdCookie->on) {
         rtdCookie->cd.setTimeout(MAX31865::WARMUP_MS);
-        rtdCookie->cd.resetTimer();
         rtdCookie->on = true;
         rtdCookie->db.active = false;
         rtdCookie->db.configured = false;
@@ -247,7 +246,6 @@ ReturnValue_t Max31865RtdPolling::sendMessage(CookieIF* cookie, const uint8_t* s
     case (EiveMax31855::RtdCommands::ACTIVE): {
       if (not rtdCookie->on) {
         rtdCookie->cd.setTimeout(MAX31865::WARMUP_MS);
-        rtdCookie->cd.resetTimer();
         rtdCookie->on = true;
         rtdCookie->db.active = true;
         rtdCookie->db.configured = false;
diff --git a/linux/devices/RwPollingTask.cpp b/linux/devices/RwPollingTask.cpp
index 2d05ac8b..7dff31bb 100644
--- a/linux/devices/RwPollingTask.cpp
+++ b/linux/devices/RwPollingTask.cpp
@@ -220,7 +220,7 @@ ReturnValue_t RwPollingTask::readNextReply(RwCookie& rwCookie, uint8_t* replyBuf
   }
   pullCsLow(gpioId, gpioIF);
   bool lastByteWasFrameMarker = false;
-  Countdown cd(3000);
+  Countdown cd(2000);
   size_t readIdx = 0;
 
   while (true) {
diff --git a/tmtc b/tmtc
index 74e6d6fe..783d5a8e 160000
--- a/tmtc
+++ b/tmtc
@@ -1 +1 @@
-Subproject commit 74e6d6fe5f10121e8444662a79fa10fada3d978c
+Subproject commit 783d5a8ed56a9683fc75d2aaffcabe82af34ffa9