diff --git a/kmk/common/internal_keycodes.py b/kmk/common/internal_keycodes.py
index 4263227..ca8e55c 100644
--- a/kmk/common/internal_keycodes.py
+++ b/kmk/common/internal_keycodes.py
@@ -16,13 +16,44 @@ def process_internal_key_event(state, action, changed_key, logger=None):
         return tg(state, action, changed_key, logger=logger)
     elif changed_key.code == Keycodes.Layers._KC_TO:
         return to(state, action, changed_key, logger=logger)
+    elif changed_key == Keycodes.KMK.KC_GESC:
+        return grave_escape(action, state, logger=logger)
     else:
         return state
 
 
-def tilde(state, action, changed_key, logger):
-    # TODO Actually process keycodes
-    return state
+def grave_escape(action, state, logger):
+    if action['type'] == KEY_DOWN_EVENT:
+        for key in state.keys_pressed:
+            if key in {Keycodes.Modifiers.KC_LSHIFT, Keycodes.Modifiers.KC_RSHIFT}:
+                # if Shift is held, return KC_GRAVE which will become KC_TILDE on OS level
+                return state.update(
+                    keys_pressed=(
+                        state.keys_pressed | {Keycodes.Common.KC_GRAVE}
+                    ),
+                )
+            elif key in {Keycodes.Modifiers.KC_LGUI, Keycodes.Modifiers.KC_RGUI}:
+                # if GUI is held, return KC_GRAVE
+                return state.update(
+                    keys_pressed=(
+                        state.keys_pressed | {Keycodes.Common.KC_GRAVE}
+                    ),
+                )
+
+            # else return KC_ESC
+            return state.update(
+                keys_pressed=(
+                    state.keys_pressed | {Keycodes.Common.KC_ESCAPE}
+                ),
+            )
+
+    elif action['type'] == KEY_UP_EVENT:
+        return state.update(
+            keys_pressed=frozenset(
+                key for key in state.keys_pressed
+                if key not in {Keycodes.Common.KC_ESCAPE, Keycodes.Common.KC_GRAVE}
+            ),
+        )
 
 
 def df(state, action, changed_key, logger):
diff --git a/linux-udev/99-stm-bootloader.rules b/linux-udev/99-stm-bootloader.rules
new file mode 100644
index 0000000..b87133f
--- /dev/null
+++ b/linux-udev/99-stm-bootloader.rules
@@ -0,0 +1 @@
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="0483", ATTRS{idProduct}=="df11", GROUP="uucp", MODE="0660"
diff --git a/user_keymaps/kdb424/handwire_planck_pyboard.py b/user_keymaps/kdb424/handwire_planck_pyboard.py
index 8274a6b..1c011e0 100644
--- a/user_keymaps/kdb424/handwire_planck_pyboard.py
+++ b/user_keymaps/kdb424/handwire_planck_pyboard.py
@@ -14,7 +14,7 @@ diode_orientation = DiodeOrientation.COLUMNS
 keymap = [
     [
         # Default
-        [KC.ESC, KC.QUOTE, KC.COMMA, KC.DOT, KC.P, KC.Y, KC.F, KC.G, KC.C, KC.R, KC.L, KC.BKSP],
+        [KC.GESC, KC.QUOTE, KC.COMMA, KC.DOT, KC.P, KC.Y, KC.F, KC.G, KC.C, KC.R, KC.L, KC.BKSP],
         [KC.TAB, KC.A, KC.O, KC.E, KC.U, KC.I, KC.D, KC.H, KC.T, KC.N, KC.S, KC.ENT],
         [KC.LSFT, KC.SCLN, KC.Q, KC.J, KC.K, KC.X, KC.B, KC.M, KC.W, KC.V, KC.Z, KC.SLSH],
         [KC.LCTRL, KC.LGUI, KC.LALT, KC.MO(2), KC.MO(3), KC.SPC, KC.SPC, KC.MO(4), KC.LEFT, KC.DOWN, KC.UP, KC.RIGHT],
diff --git a/user_keymaps/klardotsh/threethree_matrix_pyboard.py b/user_keymaps/klardotsh/threethree_matrix_pyboard.py
index 7960e56..9fe47a3 100644
--- a/user_keymaps/klardotsh/threethree_matrix_pyboard.py
+++ b/user_keymaps/klardotsh/threethree_matrix_pyboard.py
@@ -12,7 +12,7 @@ diode_orientation = DiodeOrientation.COLUMNS
 
 keymap = [
     [
-        [KC.MO(1), KC.H, KC.RESET],
+        [KC.MO(1), KC.GESC, KC.RESET],
         [KC.MO(2), KC.HASH, KC.ENTER],
         [KC.LCTRL, KC.SPACE, KC.LSHIFT],
     ],