diff --git a/scripts/sdk_installers/install_risc0_sdk.sh b/scripts/sdk_installers/install_risc0_sdk.sh
index 10b5aa7..18eb120 100755
--- a/scripts/sdk_installers/install_risc0_sdk.sh
+++ b/scripts/sdk_installers/install_risc0_sdk.sh
@@ -3,33 +3,56 @@ set -e
 
 echo "Installing Risc0 Toolchain using rzup (latest release versions)..."
 
-# Ensure curl and bash are available
-if ! command -v curl &> /dev/null; then echo "Error: curl not found." >&2; exit 1; fi
-if ! command -v bash &> /dev/null; then echo "Error: bash not found." >&2; exit 1; fi
-
-# Install rzup itself if not already present
-if ! command -v rzup &> /dev/null; then
-    echo "Installing rzup..."
-    curl -L https://risczero.com/install | bash
-    # Attempt to add rzup to PATH for the current script execution if it was just installed
-    # Common install location for rzup is $HOME/.cargo/bin
-    if [[ ":$PATH:" != *":$HOME/.cargo/bin:"* ]]; then 
-        export PATH="$HOME/.cargo/bin:$PATH"
-    fi 
-    if ! command -v rzup &> /dev/null; then 
-        echo "Error: rzup still not found after install attempt. Ensure $HOME/.cargo/bin is in your PATH or rzup installed correctly." >&2; 
-        exit 1;
-    fi
+# Get the directory of the currently executing script to reliably source utils.sh
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &> /dev/null && pwd)"
+if [ -f "${SCRIPT_DIR}/../utils.sh" ]; then
+    # shellcheck source=../utils.sh
+    source "${SCRIPT_DIR}/../utils.sh"
 else
-    echo "rzup already installed."
+    echo "Error: utils.sh not found. Expected at ${SCRIPT_DIR}/../utils.sh" >&2
+    exit 1
 fi
 
-# Install the latest released Risc0 toolchain
+ensure_tool_installed "curl" "to download the rzup installer"
+ensure_tool_installed "bash" "as the rzup installer script uses bash"
+
+# Install rzup itself if not already present
+if ! is_tool_installed "rzup"; then
+    echo "Attempting to install rzup..."
+    # The rzup installer (risczero.com/install) installs rzup to $HOME/.risc0/bin
+    # and should modify shell profiles like .bashrc to add it to PATH.
+    curl -L https://risczero.com/install | bash
+
+    # For the current script's execution, we need to add the rzup path explicitly
+    # as the .bashrc changes won't affect this running script instance.
+    RZUP_BIN_DIR="${HOME}/.risc0/bin"
+    if [ -d "${RZUP_BIN_DIR}" ] && [[ ":$PATH:" != *":${RZUP_BIN_DIR}:"* ]]; then
+        echo "Adding ${RZUP_BIN_DIR} to PATH for current script session."
+        export PATH="${RZUP_BIN_DIR}:$PATH"
+    fi
+
+    # Re-check if rzup is now in PATH
+    if ! is_tool_installed "rzup"; then
+        echo "Error: rzup command not found after installation attempt." >&2
+        echo "       Please check if ${RZUP_BIN_DIR} was created and if it's in your PATH for new shells." >&2
+        echo "       You might need to source your ~/.bashrc or similar shell profile." >&2
+        exit 1
+    fi
+    echo "rzup installed successfully and added to PATH for this session."
+else
+    echo "rzup already installed and in PATH."
+fi
+
+# Now that rzup is confirmed to be in PATH for this script, install the Risc0 toolchain
+echo "Running 'rzup install' to install/update Risc0 toolchain..."
 rzup install
 
 # Verify Risc0 installation
 echo "Verifying Risc0 installation..."
-if ! command -v cargo &> /dev/null; then echo "Error: cargo not found." >&2; exit 1; fi
+ensure_tool_installed "cargo" "as cargo-risczero needs it"
 cargo risczero --version || (echo "Error: cargo risczero command failed!" >&2 && exit 1)
 
-echo "Risc0 Toolchain installation (latest release) successful." 
\ No newline at end of file
+echo "Risc0 Toolchain installation (latest release) successful."
+echo "The rzup installer might have updated your shell configuration files (e.g., ~/.bashrc, ~/.zshrc)."
+echo "To ensure rzup and Risc0 tools are available in your current shell session if this was a new installation,"
+echo "you may need to source your shell profile (e.g., 'source ~/.bashrc') or open a new terminal." 
\ No newline at end of file