diff --git a/README.md b/README.md
index 0abf8f8..bbdc8c5 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # CMDR Joystick 25
 
-RC Joystick with 2 hall effect gimbals, 2 hat switches and 25 buttons for use both with simulators and ELRS Rx equipped quads.
+RC(ELRS)/USB Joystick with 2 hall effect gimbals, 2 hat switches and 25 buttons for use both with PC simulators and ELRS Rx equipped quads.
 
 ## Layout
 
@@ -65,7 +65,7 @@ ELRS Layer
 --------------------------------------------------------------
 | CH7 OFF | CH7 ON |       |  --  |        | CH8 ON | CH8 OFF| 
 --------------------------------------------------------------
-| | CH9 ON  | CH9 OFF  | CH5 |  | CH10 OFF | CH10 ON | CH12| |
+| | CH9 ON  | CH9 OFF  | CH5 |  | CH6 | CH10 OFF  | CH10 ON  |
 |                                                            |
 |               |  CH11 ON  |    |  CH12 ON  |               |
 |               |  CH11 OFF  |  |  CH12 OFF  |               |
@@ -75,6 +75,20 @@ ELRS Layer
 |                 | LTD |            | RTD |                 |
 --------------------------------------------------------------
 
+Config Layer
+--------------------------------------------------------------
+| BOOT | CAL |           |  CONFIG  |           | USB | ELRS | 
+--------------------------------------------------------------
+| | -- | -- | -- |                          | -- | -- | -- | |
+|                                                            |
+|                 | --- |            | --- |                 |
+|                 | --- |            | --- |                 |
+|  X(CH1)/Y(CH2)                              X(CH3)/Y(CH4)  |
+|                 | --- |            | --- |                 |
+|           | --- | --- | --- || --- | --- | --- |           |
+|                 | --- |            | --- |                 |
+--------------------------------------------------------------
+
 ```
 
 ## Features
@@ -119,12 +133,14 @@ ELRS Layer
     ``` 
 
 ## Software Build environment
-Rust
+##### Rust
 
 - Cargo (rust embedded) 
 - Flashing via Cargo 
-  - Pressing boot button on teensy
-  - Press and hold "top lower right button" when powering the unit
+  - Press and hold boot button on rp2040zero board while perform a reset 
+  - Press and hold CONF and press BOOT button. 
+
+## References
 
 - CRSF protocol description (for communicating with ELRS TX): [Link](https://github.com/ExpressLRS/ExpressLRS/wiki/CRSF-Protocol)
 - rp2040 datasheet: [pdf](https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf)
@@ -132,8 +148,7 @@ Rust
 ## Calibration
 
 1. Center both gimbals.
-2. Press all righ hand side buttons except hat switch. Status led will start blinking green.
+2. Press and hold CONF button and press CAL botton. Status led will start blinking green.
 3. Move both gimbals to all corners.
 4. Press right hat switch to save calibration data to eeprom.
 
-Done!