diff --git a/keymap.c b/corne_keymap.c
similarity index 97%
rename from keymap.c
rename to corne_keymap.c
index bc8de6c..d2cbc5b 100644
--- a/keymap.c
+++ b/corne_keymap.c
@@ -21,12 +21,22 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // clone repo https://github.com/qmk/qmk_firmware into ~/qmk_firmware
 // copy this file into ~/qmk_firmware/keyboards/crkbd/keymaps/default/keymap.c
 // copy qmk.ini into ~/
+//
 // compile the keymap:
 // > qmk compile -kb crkbd -km default
+//
 // once keyboard connected, execute:
 // > qmk flash
+//
 // or if previous doesn't work, use:
 // > qmk flash -kb crkbd -km default
+//
+// and lately it needs the '-bl dfu' too:
+// > qmk flash -bl dfu -kb crkbd -km default
+//
+// If the right side does not work or acts as it were the left side, in
+// keyboards/crkbd/keymaps/default/config.h add:
+// #define SPLIT_USB_DETECT
 
 #include QMK_KEYBOARD_H
 
diff --git a/raspberry/install-raspberry-minimum.sh b/raspberry/install-raspberry-minimum.sh
index 53ebfe7..892971b 100644
--- a/raspberry/install-raspberry-minimum.sh
+++ b/raspberry/install-raspberry-minimum.sh
@@ -25,3 +25,11 @@ cp ../.tmux.conf ~/.tmux.conf
 
 echo "append .bashrc of this repo lines to the .bashrc system file"
 cat ../.bashrc >> ~/.bashrc
+
+# Additionally, fix the IP:
+# vim /etc/dhcpcd.conf:
+#
+# interface eth0
+# static ip_address=192.168.1.150/24
+# static routers=192.168.1.1
+# static domain_name_servers=192.168.1.1
diff --git a/raspberry/netplan-config.yaml b/raspberry/netplan-config.yaml
index 95486b0..a2b5a69 100644
--- a/raspberry/netplan-config.yaml
+++ b/raspberry/netplan-config.yaml
@@ -1,3 +1,14 @@
+# UPDATE: for newer systems better directly use:
+# vim /etc/dhcpcd.conf:
+#
+# interface eth0
+# static ip_address=192.168.1.150/24
+# static routers=192.168.1.1
+# static domain_name_servers=192.168.1.1
+#
+# now reboot the rpi
+
+
 # static ip configuration
 # /etc/netplan/50-cloud-init.yaml
 
diff --git a/rs40_keymap.c b/rs40_keymap.c
new file mode 100644
index 0000000..fb0624f
--- /dev/null
+++ b/rs40_keymap.c
@@ -0,0 +1,38 @@
+// Copyright 2023 Audite Marlow (@auditemarlow)
+// SPDX-License-Identifier: GPL-3.0
+
+// Notes (Arnau):
+// - place this file at `qmk_firmware/keyboards/kj_modify/rs40/keymaps/default/keymap.c`
+// - build with `make kj_modify/rs40:default`
+// - flash with `make kj_modify/rs40:default:flash`
+// In order to flash, plug the keyboard while having pressed the 0,0 key (ESC/Tab) to enter the flash mode.
+
+#include QMK_KEYBOARD_H
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+    [0] = LAYOUT(
+        KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
+        KC_LCTL, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,             KC_QUOT,
+        KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_RSFT,
+        KC_LCTL, KC_LGUI, MO(1),          KC_SPC,                    KC_ENT,             MO(2), KC_RALT, KC_SLSH
+    ),
+	[1] = LAYOUT(
+		KC_ESC,   KC_1,    KC_2,        KC_3,   KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,  KC_DEL,
+		KC_LCTL,  KC_MUTE, KC_VOLD,  KC_VOLU,XXXXXXX, XXXXXXX,   KC_LEFT, KC_DOWN, KC_UP, KC_RIGHT,         XXXXXXX,
+		KC_LSFT,          _______,  _______, _______, _______, _______, _______, _______, _______, _______, _______,
+		_______,  KC_LGUI, _______,          KC_SPC,                   KC_ENT,          MO(3), KC_RALT, XXXXXXX
+	),
+	[2] = LAYOUT(
+		KC_ESC,   KC_EXLM, KC_AT,  KC_HASH, KC_DLR,   KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_LPRN, KC_RPRN,  KC_DEL,
+		_______, _______, _______, _______, _______,  _______, KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC,          KC_BSLS,
+		_______,          _______, _______, _______,  _______, KC_UNDS, KC_PLUS, KC_LCBR, KC_RCBR, KC_PIPE, KC_TILD,
+		_______, KC_LGUI, MO(3),          KC_SPC,                   KC_ENT,          XXXXXXX,  KC_SCLN, KC_GRV
+	),
+	[3] = LAYOUT(
+		KC_ESC,    KC_F1,    KC_F2,    KC_F3,   KC_F4,   KC_F5,    KC_F6,    KC_F7,  KC_F8,    KC_F9,  KC_F10, KC_F11,
+		XXXXXXX, XXXXXXX,  XXXXXXX,  XXXXXXX, XXXXXXX, XXXXXXX,  XXXXXXX,  XXXXXXX,XXXXXXX,  XXXXXXX,          KC_F12,
+		XXXXXXX,           _______,  _______, _______, _______,  _______,  _______,_______,  _______, _______, _______,
+		_______,  KC_LGUI, _______,          KC_SPC,                   KC_ENT,        XXXXXXX, KC_RALT, XXXXXXX
+	),
+};
+