diff --git a/.claude-plugin/marketplace.json b/.claude-plugin/marketplace.json
index c984aed..84949d6 100644
--- a/.claude-plugin/marketplace.json
+++ b/.claude-plugin/marketplace.json
@@ -9,7 +9,7 @@
       "name": "mpftp",
       "source": "./integrations/claude-code-plugin",
       "description": "A skill that teaches the mpftp CLI for MicroPython/CircuitPython boards: file transfer, REPL, driving a running app, and firmware.",
-      "version": "0.1.1"
+      "version": "0.1.2-rc.1"
     }
   ]
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 660c11c..c29b0a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## v0.1.2rc1 (2026-10-11)
 
 - The browser interface's Firmware button downloads official MicroPython and
   flashes it. Pick a board from micropython.org's own board list, then its
diff --git a/VERSION b/VERSION
index 17e51c3..d4a04cc 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.1.1
+0.1.2rc1
diff --git a/extension/package-lock.json b/extension/package-lock.json
index c280be0..7a783f0 100644
--- a/extension/package-lock.json
+++ b/extension/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mpftp",
-  "version": "0.1.1",
+  "version": "0.1.2-rc.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "mpftp",
-      "version": "0.1.1",
+      "version": "0.1.2-rc.1",
       "license": "MIT",
       "dependencies": {
         "@vscode/codicons": "^0.0.45"
diff --git a/extension/package.json b/extension/package.json
index c302b0d..4d26642 100644
--- a/extension/package.json
+++ b/extension/package.json
@@ -2,7 +2,7 @@
   "name": "mpftp",
   "displayName": "mpftp — MicroPython / CircuitPython Board Tools",
   "description": "Connect to MicroPython and CircuitPython boards over USB serial or Wi-Fi (WebREPL): dual-pane file transfer, ANSI REPL, mip/circup packages, and guided MicroPython firmware download/build/flash. Works on Linux, Windows, and WSL (COM ports via Windows Python).",
-  "version": "0.1.1",
+  "version": "0.1.2-rc.1",
   "publisher": "pydevices",
   "license": "MIT",
   "engines": {
diff --git a/integrations/claude-code-plugin/.claude-plugin/plugin.json b/integrations/claude-code-plugin/.claude-plugin/plugin.json
index 2b5094d..e023c59 100644
--- a/integrations/claude-code-plugin/.claude-plugin/plugin.json
+++ b/integrations/claude-code-plugin/.claude-plugin/plugin.json
@@ -1,7 +1,7 @@
 {
   "name": "mpftp",
   "description": "A skill that teaches the mpftp CLI for MicroPython/CircuitPython boards: file transfer, REPL, driving a running app, and firmware.",
-  "version": "0.1.1",
+  "version": "0.1.2-rc.1",
   "author": {
     "name": "Brad Barnett"
   },
diff --git a/ui/package-lock.json b/ui/package-lock.json
index f7345d3..ddf1487 100644
--- a/ui/package-lock.json
+++ b/ui/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mpftp-ui",
-  "version": "0.1.1",
+  "version": "0.1.2-rc.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "mpftp-ui",
-      "version": "0.1.1",
+      "version": "0.1.2-rc.1",
       "dependencies": {
         "@codemirror/lang-python": "^6.2.1",
         "@xterm/addon-fit": "^0.11.0",
diff --git a/ui/package.json b/ui/package.json
index 01c2dc9..8e4f578 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mpftp-ui",
-  "version": "0.1.1",
+  "version": "0.1.2-rc.1",
   "private": true,
   "description": "mpftp local PWA: file transfer + REPL for a MicroPython/CircuitPython board.",
   "scripts": {