diff --git a/protobufs b/protobufs
index 8c8048798..8f4faf76e 160000
--- a/protobufs
+++ b/protobufs
@@ -1 +1 @@
-Subproject commit 8c8048798c1b1773b9d8f2c32eb3f4c9e72f8218
+Subproject commit 8f4faf76e52c2ef63c582c26642d312d9781b7c0
diff --git a/src/gps/ubx.h b/src/gps/ubx.h
index 0a382a8a3..0852c331d 100644
--- a/src/gps/ubx.h
+++ b/src/gps/ubx.h
@@ -319,6 +319,8 @@ const uint8_t GPS::_message_SAVE[] = {
 // As the M10 has no flash, the best we can do to preserve the config is to set it in RAM and BBR.
 // BBR will survive a restart, and power off for a while, but modules with small backup
 // batteries or super caps will not retain the config for a long power off time.
+// for all configurations using sleep / low power modes, V_BCKP needs to be hooked to permanent power for fast aquisition after
+// sleep
 
 // VALSET Commands for M10
 // Please refer to the M10 Protocol Specification:
@@ -327,40 +329,42 @@ const uint8_t GPS::_message_SAVE[] = {
 // and:
 // https://content.u-blox.com/sites/default/files/u-blox-M10-ROM-5.10_ReleaseNotes_UBX-22001426.pdf
 // for interesting insights.
+//
+// Integration manual:
+// https://content.u-blox.com/sites/default/files/documents/SAM-M10Q_IntegrationManual_UBX-22020019.pdf
+// has details on low-power modes
+
 /*
 CFG-PM2 has been replaced by many CFG-PM commands
-OPERATEMODE E1 2 (0 | 1 | 2)
-POSUPDATEPERIOD U4 1000ms for M10 must be >= 5s try 5
-ACQPERIOD U4 10 seems ok for M10 def ok
-GRIDOFFSET U4 0 seems ok for M10 def ok
-ONTIME U2 1 will try 1
-MINACQTIME U1 0 will try 0 def ok
-MAXACQTIME U1 stick with default of 0 def ok
-DONOTENTEROFF L 1 stay at 1
-WAITTIMEFIX  L 1 stay with 1
-UPDATEEPH L 1 changed to 1 for gps rework default is 1
-EXTINTWAKE L 0 no ext ints
-EXTINTBACKUP L 0 no ext ints
-EXTINTINACTIVE L 0 no ext ints
-EXTINTACTIVITY U4 0 no ext ints
-LIMITPEAKCURRENT L 1 stay with 1
-*/
-// CFG-PMS has been removed
+CFG-PMS has been removed
+
+CFG-PM-OPERATEMODE E1 (0 | 1 | 2) -> 1 (PSMOO), because sporadic position updates are required instead of continous tracking <10s
+(PSMCT) CFG-PM-POSUPDATEPERIOD U4 -> 0ms, no self-timed wakup because receiver power mode is controlled via "software standby
+mode" by legacy UBX-RXM-PMREQ request CFG-PM-ACQPERIOD U4 -> 0ms, because receiver power mode is controlled via "software standby
+mode" by legacy UBX-RXM-PMREQ request CFG-PM-ONTIME U4 -> 0ms, optional I guess CFG-PM-EXTINTBACKUP L -> 1, force receiver into
+BACKUP mode when EXTINT (should be connected to GPS_EN_PIN) pin is "low"
+
+This is required because the receiver never enters low power mode if microcontroller is in deep-sleep.
+Maybe the changing UART_RX levels trigger a wakeup but even with UBX-RXM-PMREQ[12] = 0x00 (all external wakeup sources disabled)
+the receivcer remains in aquisition state -> potentially a bug
+
+Workaround: Control the EXTINT pin by the GPS_EN_PIN signal
+
+As mentioned in the M10 operational issues down below, power save won't allow the use of BDS B1C.
+CFG-SIGNAL-BDS_B1C_ENA L -> 0
 
 // Ram layer config message:
-// b5 62 06 8a 26 00 00 01 00 00 01 00 d0 20 02 02 00 d0 40 05 00 00 00 05 00 d0 30 01 00 08 00 d0 10 01 09 00 d0 10 01 10 00 d0
-// 10 01 8b de
+// 01 01 00 00 01 00 D0 20 01 02 00 D0 40 00 00 00 00 03 00 D0 40 00 00 00 00 05 00 D0 30 00 00 0D 00 D0 10 01
 
 // BBR layer config message:
-// b5 62 06 8a 26 00 00 02 00 00 01 00 d0 20 02 02 00 d0 40 05 00 00 00 05 00 d0 30 01 00 08 00 d0 10 01 09 00 d0 10 01 10 00 d0
-// 10 01 8c 03
-
-const uint8_t GPS::_message_VALSET_PM_RAM[] = {0x00, 0x01, 0x00, 0x00, 0x01, 0x00, 0xd0, 0x20, 0x02, 0x02, 0x00, 0xd0, 0x40,
-                                               0x05, 0x00, 0x00, 0x00, 0x05, 0x00, 0xd0, 0x30, 0x01, 0x00, 0x08, 0x00, 0xd0,
-                                               0x10, 0x01, 0x09, 0x00, 0xd0, 0x10, 0x01, 0x10, 0x00, 0xd0, 0x10, 0x01};
-const uint8_t GPS::_message_VALSET_PM_BBR[] = {0x00, 0x02, 0x00, 0x00, 0x01, 0x00, 0xd0, 0x20, 0x02, 0x02, 0x00, 0xd0, 0x40,
-                                               0x05, 0x00, 0x00, 0x00, 0x05, 0x00, 0xd0, 0x30, 0x01, 0x00, 0x08, 0x00, 0xd0,
-                                               0x10, 0x01, 0x09, 0x00, 0xd0, 0x10, 0x01, 0x10, 0x00, 0xd0, 0x10, 0x01};
+// 01 02 00 00 01 00 D0 20 01 02 00 D0 40 00 00 00 00 03 00 D0 40 00 00 00 00 05 00 D0 30 00 00 0D 00 D0 10 01
+*/
+const uint8_t GPS::_message_VALSET_PM_RAM[] = {0x01, 0x01, 0x00, 0x00, 0x0F, 0x00, 0x31, 0x10, 0x00, 0x01, 0x00, 0xD0, 0x20, 0x01,
+                                               0x02, 0x00, 0xD0, 0x40, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0xD0, 0x40, 0x00, 0x00,
+                                               0x00, 0x00, 0x05, 0x00, 0xD0, 0x30, 0x00, 0x00, 0x0D, 0x00, 0xD0, 0x10, 0x01};
+const uint8_t GPS::_message_VALSET_PM_BBR[] = {0x01, 0x02, 0x00, 0x00, 0x0F, 0x00, 0x31, 0x10, 0x00, 0x01, 0x00, 0xD0, 0x20, 0x01,
+                                               0x02, 0x00, 0xD0, 0x40, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0xD0, 0x40, 0x00, 0x00,
+                                               0x00, 0x00, 0x05, 0x00, 0xD0, 0x30, 0x00, 0x00, 0x0D, 0x00, 0xD0, 0x10, 0x01};
 
 /*
 CFG-ITFM replaced by 5 valset messages which can be combined into one for RAM and one for BBR
diff --git a/src/mesh/generated/meshtastic/mesh.pb.h b/src/mesh/generated/meshtastic/mesh.pb.h
index ad97cb80f..0e9e6a28d 100644
--- a/src/mesh/generated/meshtastic/mesh.pb.h
+++ b/src/mesh/generated/meshtastic/mesh.pb.h
@@ -161,6 +161,8 @@ typedef enum _meshtastic_HardwareModel {
     /* RadioMaster 900 Bandit Nano, https://www.radiomasterrc.com/products/bandit-nano-expresslrs-rf-module
  ESP32-D0WDQ6 With SX1276/SKY66122, SSD1306 OLED and No GPS */
     meshtastic_HardwareModel_RADIOMASTER_900_BANDIT_NANO = 64,
+    /* Heltec Capsule Sensor V3 with ESP32-S3 CPU, Portable LoRa device that can replace GNSS modules or sensors */
+    meshtastic_HardwareModel_HELTEC_CAPSULE_SENSOR_V3 = 65,
     /* ------------------------------------------------------------------------------------------------------------------------------------------
  Reserved ID For developing private Ports. These will show up in live traffic sparsely, so we can use a high number. Keep it within 8 bits.
  ------------------------------------------------------------------------------------------------------------------------------------------ */
diff --git a/src/platform/nrf52/NRF52Bluetooth.cpp b/src/platform/nrf52/NRF52Bluetooth.cpp
index 39898ab25..4c25f38ea 100644
--- a/src/platform/nrf52/NRF52Bluetooth.cpp
+++ b/src/platform/nrf52/NRF52Bluetooth.cpp
@@ -215,6 +215,18 @@ void NRF52Bluetooth::shutdown()
     Bluefruit.Advertising.stop();
 }
 
+void NRF52Bluetooth::startDisabled()
+{
+    // Setup Bluetooth
+    nrf52Bluetooth->setup();
+
+    // Shutdown bluetooth for minimum power draw
+    Bluefruit.Advertising.stop();
+    Bluefruit.setTxPower(-40); // Minimum power
+
+    LOG_INFO("Disabling NRF52 Bluetooth. (Workaround: tx power min, advertising stopped)\n");
+}
+
 bool NRF52Bluetooth::isConnected()
 {
     return Bluefruit.connected(connectionHandle);
diff --git a/src/platform/nrf52/NRF52Bluetooth.h b/src/platform/nrf52/NRF52Bluetooth.h
index 11e18c127..450af47f9 100644
--- a/src/platform/nrf52/NRF52Bluetooth.h
+++ b/src/platform/nrf52/NRF52Bluetooth.h
@@ -8,6 +8,7 @@ class NRF52Bluetooth : BluetoothApi
   public:
     void setup();
     void shutdown();
+    void startDisabled();
     void resumeAdvertising();
     void clearBonds();
     bool isConnected();
diff --git a/src/platform/nrf52/main-nrf52.cpp b/src/platform/nrf52/main-nrf52.cpp
index 9cc52a7de..1f2c6867d 100644
--- a/src/platform/nrf52/main-nrf52.cpp
+++ b/src/platform/nrf52/main-nrf52.cpp
@@ -68,28 +68,47 @@ static const bool useSoftDevice = true; // Set to false for easier debugging
 #if !MESHTASTIC_EXCLUDE_BLUETOOTH
 void setBluetoothEnable(bool enable)
 {
-    if (enable && config.bluetooth.enabled) {
-        if (!useSoftDevice) {
+    // For debugging use: don't use bluetooth
+    if (!useSoftDevice) {
+        if (enable)
             LOG_INFO("DISABLING NRF52 BLUETOOTH WHILE DEBUGGING\n");
-        } else {
-            if (!nrf52Bluetooth) {
-                LOG_DEBUG("Initializing NRF52 Bluetooth\n");
-                nrf52Bluetooth = new NRF52Bluetooth();
-                nrf52Bluetooth->setup();
-
-                // We delay brownout init until after BLE because BLE starts soft device
-                initBrownout();
-            } else {
-                nrf52Bluetooth->resumeAdvertising();
-            }
-        }
-    } else {
-        if (nrf52Bluetooth) {
-            nrf52Bluetooth->shutdown();
-        }
+        return;
     }
+
+    // If user disabled bluetooth: init then disable advertising & reduce power
+    // Workaround. Avoid issue where device hangs several days after boot..
+    // Allegedly, no significant increase in power consumption
+    if (!config.bluetooth.enabled) {
+        static bool initialized = false;
+        if (!initialized) {
+            nrf52Bluetooth = new NRF52Bluetooth();
+            nrf52Bluetooth->startDisabled();
+            initBrownout();
+            initialized = true;
+        }
+        return;
+    }
+
+    if (enable) {
+        // If not yet set-up
+        if (!nrf52Bluetooth) {
+            LOG_DEBUG("Initializing NRF52 Bluetooth\n");
+            nrf52Bluetooth = new NRF52Bluetooth();
+            nrf52Bluetooth->setup();
+
+            // We delay brownout init until after BLE because BLE starts soft device
+            initBrownout();
+        }
+        // Already setup, apparently
+        else
+            nrf52Bluetooth->resumeAdvertising();
+    }
+    // Disable (if previously set-up)
+    else if (nrf52Bluetooth)
+        nrf52Bluetooth->shutdown();
 }
 #else
+#warning NRF52 "Bluetooth disable" workaround does not apply to builds with MESHTASTIC_EXCLUDE_BLUETOOTH
 void setBluetoothEnable(bool enable) {}
 #endif
 /**