Updated WEEK05

WEEK04/WEEK04.md

@@ -1,4 +1,4 @@
-# Week 4: Variables in Embedded Systems: Debugging and Hacking Variables w/ GPIO Output Basics
+# Week 4: Variables in Embedded Systems: Debugging and Hacking Variables w/ GPIO Output Basics
 
 ## 🎯 What You'll Learn This Week
 
@@ -417,10 +417,10 @@ This instruction loads the value `0x2b` (43) into register `r1` before calling `
 
 We're going to change `0x2b` (43) to `0x46` (70)!
 
-1. Click on the instruction `movs r1,#0x2b`
+1. At address `1000023a`, click the instruction `movs r1,#0x2b`
 2. Right-click and select **Patch Instruction**
-3. Change `0x2b` to `0x46`
-4. Press Enter
+3. Replace immediate `0x2b` with `0x46`
+4. Press Enter and verify the instruction bytes change from `2b 21` to `46 21`
 
 The instruction now reads:
 ```assembly
@@ -446,7 +446,7 @@ The Pico 2 expects UF2 files, not raw BIN files. We need to convert it!
 **Open a terminal and navigate to your project directory:**
 
 ```powershell
-cd C:\Users\assem.KEVINTHOMAS\OneDrive\Documents\Embedded-Hacking\0x0005_intro-to-variables
+cd C:\Users\flare-vm\Desktop\Embedded-Hacking-main\0x0005_intro-to-variables
 ```
 
 **Run the conversion command:**
@@ -609,10 +609,10 @@ This is where `gpio_init(LED_PIN)` is called with GPIO 16.
 
 We'll change the red LED (GPIO 16) to the green LED (GPIO 17)!
 
-1. Find the instruction `movs r0,#0x10`
+1. At address `1000023a`, select `movs r0,#0x10`
 2. Right-click -> **Patch Instruction**
-3. Change `0x10` to `0x11` (17 in hex)
-4. Click **OK**
+3. Replace immediate `0x10` with `0x11` (17 decimal)
+4. Click **OK** and verify bytes change from `10 20` to `11 20`
 
 ### Step 28: Find All GPIO 16 References
 
@@ -629,6 +629,9 @@ This is used in `gpio_set_dir`. Patch this to `0x11` as well.
 ```
 
 This is inside the loop for `gpio_put`. Patch this to `0x11` as well.
+Patch each one with **Patch Instruction**, then verify:
+- `10000244`: `10 23` -> `11 23`
+- `10000252`: `10 24` -> `11 24`
 
 ### Step 29: Bonus - Change the Printed Value
 
@@ -639,8 +642,8 @@ Let's also change the printed value from `0` to `0x42` (66 in decimal):
 ```
 
 1. Right-click -> **Patch Instruction**
-2. Change `0x0` to `0x42`
-3. Click **OK**
+2. Replace immediate `0x0` with `0x42`
+3. Click **OK** and verify bytes change from `00 21` to `42 21`
 
 ---
 
@@ -656,7 +659,7 @@ Let's also change the printed value from `0` to `0x42` (66 in decimal):
 ### Step 31: Convert to UF2
 
 ```powershell
-cd C:\Users\assem.KEVINTHOMAS\OneDrive\Documents\Embedded-Hacking\0x0008_uninitialized-variables
+cd C:\Users\flare-vm\Desktop\Embedded-Hacking-main\0x0008_uninitialized-variables
 python ..\uf2conv.py build\0x0008_uninitialized-variables-h.bin --base 0x10000000 --family 0xe48bff59 --output build\hacked.uf2
 ```
 
@@ -802,7 +805,7 @@ delay2:
 +-----------------------------------------------------------------+
 |  3. Find the values/instructions to patch                       |
 |     - Look in the assembly listing                              |
-|     - Right-click -> Patch Instruction                           |
+|     - Patch Instruction, then verify old bytes -> new bytes     |
 +-----------------------------------------------------------------+
 |  4. Export the patched binary                                   |
 |     - File -> Export Program                                     |
@@ -832,7 +835,7 @@ delay2:
 | Action            | How To Do It                          |
 | ----------------- | ------------------------------------- |
 | Rename function   | Right-click -> Edit Function Signature |
-| Patch instruction | Right-click -> Patch Instruction       |
+| Patch instruction | Right-click -> Patch Instruction, then verify old bytes -> new bytes |
 | Export binary     | File -> Export Program -> Raw Bytes     |
 | Go to address     | Press 'G' and enter address           |
 
@@ -903,4 +906,4 @@ The RP2350 GPIO coprocessor instructions:
 **Remember:** Every binary you encounter in the real world can be analyzed and understood using these same techniques. Practice makes perfect!
 
 Happy hacking! 🔧
-
+