diff --git a/README.md b/README.md
index 46358d7..a4d9abb 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,7 @@ VE environments.
 Run as `root` on a Proxmox VE host:
 
 ```bash
-bash <(curl -fsSL https://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/V2/install-ta_proxmenu.sh)
+bash <(curl -fsSL https://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/main/install-ta_proxmenu.sh)
 ```
 
 The installed launcher loads TA-ProxMenu's bundled defaults and colors, then
@@ -22,9 +22,10 @@ branch, and fast-forward safety checks. Offline, unreachable, dirty, ahead, or
 diverged nodes are never overwritten and are reported as failures. Standalone
 hosts retain the local-only update behavior.
 
-When testing this branch, use `tapm main` to switch the installed copy back to
-the published main branch. The command refuses to switch when local changes,
-local-only commits, or diverged branch history would be at risk.
+Legacy installations automatically update from the published `main` branch.
+On their first launch after receiving this version, control is handed to the
+current preloader so the new startup configuration and registration procedures
+run before the menu opens.
 
 The TA-ProxMenu Management menu can safely switch TA-ProxMenu between branches published on
 its Git origin. Branch switching is refused when the installed repository has
@@ -104,7 +105,7 @@ Pulse can also be deployed without installing TA-ProxMenu. Run the standalone
 bootstrap as root on a Proxmox VE host:
 
 ```bash
-bash <(curl -fsSL https://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/V2/install-pulse.sh)
+bash <(curl -fsSL https://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/main/install-pulse.sh)
 ```
 
 The bootstrap downloads the Pulse deployment module and its LXC storage helper
@@ -167,7 +168,7 @@ without `https://` or a path. Repository updates use the installed
 TA-ProxMenu checkout's configured Git `origin` and do not overwrite the system
 configuration file.
 
-On the first V2 launch after installation or upgrade, TA-ProxMenu detects a
+On the first launch after installation or upgrade, TA-ProxMenu detects a
 missing or incomplete `/etc/ta-proxmenu/config.env` and interactively requests
 both values. Inputs are validated and written atomically with mode `0600`
 before update checks or menu actions continue. A non-interactive launch without
@@ -176,7 +177,7 @@ a default company URL.
 
 ## Installation registry
 
-V2 creates a random installation UUID and 256-bit credential in
+TA-ProxMenu creates a random installation UUID and 256-bit credential in
 `/var/lib/ta-proxmenu/identity.env`. The directory is mode `0700` and the file
 is mode `0600`. The first successful launch enrolls the host with the broker.
 Later launches make one best-effort HTTPS call on completion or failure to
diff --git a/inc/runtime-config.inc b/inc/runtime-config.inc
index b6bc307..322a960 100644
--- a/inc/runtime-config.inc
+++ b/inc/runtime-config.inc
@@ -71,7 +71,7 @@ TAPM_ENSURE_RUNTIME_CONFIG() {
 		exec 3>/dev/tty
 	fi
 
-	printf '\nTA-ProxMenu V2 requires deployment service configuration.\n' \
+	printf '\nTA-ProxMenu requires deployment service configuration.\n' \
 		>&3
 	while true; do
 		printf 'TAPM broker HTTPS origin (example: https://tapm.example.com): ' \
diff --git a/install-pulse.sh b/install-pulse.sh
index 27c7820..6033d28 100755
--- a/install-pulse.sh
+++ b/install-pulse.sh
@@ -3,7 +3,7 @@
 
 set -u -o pipefail
 
-TAPM_PULSE_SOURCE_BRANCH="${TAPM_PULSE_SOURCE_BRANCH:-V2}"
+TAPM_PULSE_SOURCE_BRANCH="${TAPM_PULSE_SOURCE_BRANCH:-main}"
 TAPM_PULSE_SOURCE_BASE="${TAPM_PULSE_SOURCE_BASE:-https://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/${TAPM_PULSE_SOURCE_BRANCH}}"
 TAPM_PULSE_BOOTSTRAP_DIR=''
 TAPM_TEMP_DIR=''
diff --git a/proxmenu-scripts.sh b/proxmenu-scripts.sh
index 8771d1d..bfcbbf7 100755
--- a/proxmenu-scripts.sh
+++ b/proxmenu-scripts.sh
@@ -1,6 +1,14 @@
 #!/usr/bin/env bash
 # TA-Proxmenu - Proxmox Setup Scripts for TA Use
 
+# Legacy main installations update their worktree from the old preloader and
+# then launch this newly downloaded script without restarting run.sh. Hand the
+# first post-update launch back to the current preloader so all current startup
+# configuration and registration procedures run before the menu is loaded.
+if [[ "${TAPM_PRELOADER_ACTIVE:-0}" != 1 ]]; then
+	exec /opt/idssys/ta-proxmenu/run.sh \
+		"${1:-}" "${2:-}" "${3:-}" "${4:-}"
+fi
 
 [ "${2:-}" != "q" ] && source /opt/idssys/ta-proxmenu/colors.inc
 source /opt/idssys/ta-proxmenu/defaults.inc
diff --git a/run.sh b/run.sh
index f453d14..c1a9330 100755
--- a/run.sh
+++ b/run.sh
@@ -190,7 +190,7 @@ case "${1:-}" in
 		;;
 esac
 
-/opt/idssys/ta-proxmenu/proxmenu-scripts.sh \
+TAPM_PRELOADER_ACTIVE=1 /opt/idssys/ta-proxmenu/proxmenu-scripts.sh \
 	"${1:-}" "${2:-}" "${3:-}" "${4:-}"
 
 exit $?
diff --git a/tests/test-pulse-standalone.sh b/tests/test-pulse-standalone.sh
index d699255..9c30a13 100755
--- a/tests/test-pulse-standalone.sh
+++ b/tests/test-pulse-standalone.sh
@@ -6,8 +6,8 @@ source "${TEST_ROOT}/tests/testlib.sh"
 TAPM_PULSE_STANDALONE_NO_MAIN=1
 source "${TEST_ROOT}/install-pulse.sh"
 
-assert_success "default V2 source branch accepted" \
-	TAPM_PULSE_VALID_SOURCE_BRANCH V2
+assert_success "default main source branch accepted" \
+	TAPM_PULSE_VALID_SOURCE_BRANCH main
 assert_success "nested release branch accepted" \
 	TAPM_PULSE_VALID_SOURCE_BRANCH releases/pulse-6
 assert_failure "empty source branch rejected" \
@@ -16,9 +16,9 @@ assert_failure "source branch traversal rejected" \
 	TAPM_PULSE_VALID_SOURCE_BRANCH '../main'
 assert_success "HTTPS source base accepted" \
 	TAPM_PULSE_VALID_SOURCE_BASE \
-	https://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/V2
+	https://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/main
 assert_failure "HTTP source base rejected" \
 	TAPM_PULSE_VALID_SOURCE_BASE \
-	http://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/V2
+	http://tagit.technologyarch.com/TAI/TA-ProxMenu/raw/branch/main
 
 finish_tests
diff --git a/tests/test-self-contained-runtime.sh b/tests/test-self-contained-runtime.sh
index 023663c..371844b 100755
--- a/tests/test-self-contained-runtime.sh
+++ b/tests/test-self-contained-runtime.sh
@@ -18,5 +18,11 @@ assert_success "ENTER2CONTINUE is bundled in TA-ProxMenu defaults" \
 assert_failure "runtime launchers do not reference external iDS defaults" \
 	grep -E -q '/opt/idssys/defaults|iDS-Defaults' \
 	"${TEST_ROOT}/run.sh" "${TEST_ROOT}/proxmenu-scripts.sh"
+assert_success "current preloader marks proxmenu launches" \
+	grep -q '^TAPM_PRELOADER_ACTIVE=1 /opt/idssys/ta-proxmenu/proxmenu-scripts.sh' \
+	"${TEST_ROOT}/run.sh"
+assert_success "legacy post-update launch returns to current preloader" \
+	grep -q 'if \[\[ "${TAPM_PRELOADER_ACTIVE:-0}" != 1 \]\]; then' \
+	"${TEST_ROOT}/proxmenu-scripts.sh"
 
 finish_tests