diff --git a/overlay/etc/udev/rules.d/76-et-lora.rules b/overlay/etc/udev/rules.d/76-et-lora.rules
index 1a8c6b7..a5e75ae 100644
--- a/overlay/etc/udev/rules.d/76-et-lora.rules
+++ b/overlay/etc/udev/rules.d/76-et-lora.rules
@@ -1,11 +1,13 @@
 # Author   : Gaston Gonzalez
 # Date     : 14 June 2026
+# Updated  : 13 July 2026
 # Purpose  : udev rules for supported LoRa devices
 #
 # Supported Devices
 # 1. Heltec v4
-# 2. Heltec v3 (disabled due to collection with et-radio devices)
+# 2. Heltec v3 (disabled due to collision with et-radio devices)
 # 3. LilyGO TTGO v2.1
+# 4. RAK4631
 #
 # Preconditions:
 # 1. LoRa device connected via USB cable
@@ -27,3 +29,8 @@ SUBSYSTEM=="tty", ATTRS{idVendor}=="303a", ATTRS{idProduct}=="1001", ENV{ET_LORA
 SUBSYSTEM=="tty", ATTRS{idVendor}=="1a86", ATTRS{idProduct}=="55d4", ENV{ET_LORA_DEVICE}=="" \
     ACTION=="add", \
     ENV{ET_LORA_DEVICE}="LillyGO TTGO v2.1" GROUP="dialout", MODE="0660", SYMLINK+="et-lora"
+
+# RAK4631 (Tested with Delta Plus Nephilim HV 1.14)
+SUBSYSTEM=="tty", ATTRS{idVendor}=="239a", ATTRS{idProduct}=="8029", ENV{ET_LORA_DEVICE}=="" \
+    ACTION=="add", \
+    ENV{ET_LORA_DEVICE}="Delta Plus Nephilim" GROUP="dialout", MODE="0660", SYMLINK+="et-lora"
diff --git a/overlay/opt/emcomm-tools/bin/et-rnode-flash-heltec-v4 b/overlay/opt/emcomm-tools/bin/et-rnode-flash-heltec-v4
index 1b3be85..7fe7cb7 100755
--- a/overlay/opt/emcomm-tools/bin/et-rnode-flash-heltec-v4
+++ b/overlay/opt/emcomm-tools/bin/et-rnode-flash-heltec-v4
@@ -2,8 +2,9 @@
 #
 # Author  : Gaston Gonzalez
 # Date    : 5 July 2026
+# Updated : 13 July 2026
 # Purpose : Flash the Heltec v4 esp32 LoRa device offline.
-#           Uses that cached firmare in EmComm Tools.
+#           Uses the cached firmare in EmComm Tools.
 
 rnodeconf \
   --autoinstall \
diff --git a/overlay/opt/emcomm-tools/bin/et-rnode-flash-rak4631 b/overlay/opt/emcomm-tools/bin/et-rnode-flash-rak4631
new file mode 100755
index 0000000..8bd4384
--- /dev/null
+++ b/overlay/opt/emcomm-tools/bin/et-rnode-flash-rak4631
@@ -0,0 +1,12 @@
+#!/bin/bash
+#
+# Author  : Gaston Gonzalez
+# Date    : 13 July 2026
+# Purpose : Flash the RAK4631 LoRa device offline.
+#           Uses the cached firmare in EmComm Tools.
+
+rnodeconf \
+  --autoinstall \
+  --nocheck \
+  --fw-version 1.86 \
+  --baud-flash 115200
diff --git a/scripts/install-offline-rnode-firmware.json b/scripts/install-offline-rnode-firmware.json
index e53135c..7e5e0e1 100644
--- a/scripts/install-offline-rnode-firmware.json
+++ b/scripts/install-offline-rnode-firmware.json
@@ -5,5 +5,12 @@
     "dir": "update/1.86",
     "version": "1.86",
     "hash": "75ed47d6a4259e9d073cda680b7323eda420659e117ca4ce42c119b2c9513805"
+  },
+  {
+    "url": "https://github.com/markqvist/RNode_Firmware/releases/download/1.86/rnode_firmware_rak4631.zip",
+    "file": "rnode_firmware_rak4631.zip",
+    "dir": "update/1.86",
+    "version": "1.86",
+    "hash": "99cae226cca349a1f567f0a6c0c9a0fd4cc9500ec079a631b18b8d4c29e7aa9c"
   }
 ]