diff --git a/History.md b/History.md
index e6723400d9..0ac5af40fc 100644
--- a/History.md
+++ b/History.md
@@ -1,4 +1,4 @@
-## v2.6, 2021-11-
+## vNext, UNRELEASED
 
 #### Highlights
 
@@ -8,9 +8,29 @@
 
 #### Independent Releases
 
-* `minifier-js@2.7.2` 
+## v2.5.1, 2021-11-17
+
+#### Highlights
+- Mac M1 Support - darwin arm64
+
+#### Breaking Changes
+- `Meteor.loginWithToken` from the new package `accounts-passwordless` was conflicting with another method with the same name on `accounts-base` so we had to rename the method of `accounts-passwordless` package to `Meteor.passwordlessLoginWithToken`. 
+
+#### Meteor Version Release
+
+* `meteor-tool@2.5.1`
+  - Meteor supports now Mac M1 chips (darwin arm64)
+  
+* `accounts-passwordless@2.0.0`
+  - `Meteor.loginWithToken` from the new package `accounts-passwordless` was conflicting with another method with the same name on `accounts-base` so we had to rename the method of `accounts-passwordless` package to `Meteor.passwordlessLoginWithToken`.
+
+#### Independent Releases
+* `minifier-js@2.7.2`
   - Stopped using `evaluate` option in the compression to fix a [bug](https://github.com/meteor/meteor/issues/11756).
   - Updated `terser` to [v5.9.0](https://github.com/terser/terser/blob/master/CHANGELOG.md#v590) to fix various bugs
+  
+* `standard-minifier-js@2.7.2`
+  - Using `minifier-js@2.7.2`
 
 * `github-oauth@1.3.2`
   - Migrate from `http` to `fetch`
diff --git a/docs/source/packages/accounts-passwordless.md b/docs/source/packages/accounts-passwordless.md
index ae620401ad..2035cc7c67 100644
--- a/docs/source/packages/accounts-passwordless.md
+++ b/docs/source/packages/accounts-passwordless.md
@@ -10,7 +10,7 @@ The first step to in the passwordless process is for the user to sign-up or requ
 
 If the user is signing up you can pass in the `userData` object like in [Accounts.createUser](/api/passwords.html#Accounts-createUser).
 
-{% apibox "Meteor.loginWithToken" %}
+{% apibox "Meteor.passwordlessLoginWithToken" %}
 The second step in the passwordless flow. Like all the other `loginWith` functions call this method to login the user with the token they have inputted.
 
 {% apibox "Accounts.sendLoginTokenEmail" %}
diff --git a/meteor b/meteor
index b340deca4e..bfa216cb60 100755
--- a/meteor
+++ b/meteor
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-BUNDLE_VERSION=14.18.1.2
+BUNDLE_VERSION=14.18.1.4
 
 # OS Check. Put here because here is where we download the precompiled
 # bundles that are arch specific.
diff --git a/npm-packages/eslint-plugin-meteor/scripts/dev-bundle-server-package.js b/npm-packages/eslint-plugin-meteor/scripts/dev-bundle-server-package.js
index f814d535a6..05dfef42fb 100644
--- a/npm-packages/eslint-plugin-meteor/scripts/dev-bundle-server-package.js
+++ b/npm-packages/eslint-plugin-meteor/scripts/dev-bundle-server-package.js
@@ -10,7 +10,7 @@ var packageJson = {
   dependencies: {
     // Keep the versions of these packages consistent with the versions
     // found in dev-bundle-tool-package.js.
-    fibers: "5.0.0",
+    fibers: "https://github.com/meteor/node-fibers/archive/refs/tags/5.0.0.tar.gz",
     "meteor-promise": "0.9.0",
     promise: "8.1.0",
     reify: "0.22.2",
diff --git a/npm-packages/eslint-plugin-meteor/scripts/dev-bundle-tool-package.js b/npm-packages/eslint-plugin-meteor/scripts/dev-bundle-tool-package.js
index 71642bdb00..f08b8068f8 100644
--- a/npm-packages/eslint-plugin-meteor/scripts/dev-bundle-tool-package.js
+++ b/npm-packages/eslint-plugin-meteor/scripts/dev-bundle-tool-package.js
@@ -19,7 +19,7 @@ var packageJson = {
     // Keep the versions of these packages consistent with the versions
     // found in dev-bundle-server-package.js.
     "meteor-promise": "0.9.0",
-    fibers: "5.0.0",
+    fibers: "https://github.com/meteor/node-fibers/archive/refs/tags/5.0.0.tar.gz",
     reify: "0.22.2",
     // So that Babel can emit require("@babel/runtime/helpers/...") calls.
     "@babel/runtime": "7.15.3",
diff --git a/npm-packages/meteor-installer/config.js b/npm-packages/meteor-installer/config.js
index dfd2401913..10cf679463 100644
--- a/npm-packages/meteor-installer/config.js
+++ b/npm-packages/meteor-installer/config.js
@@ -1,17 +1,31 @@
 const path = require('path');
 const os = require('os');
 
-const METEOR_LATEST_VERSION = '2.5';
+const METEOR_LATEST_VERSION = '2.5.1';
 const sudoUser = process.env.SUDO_USER || '';
 function isRoot() {
   return process.getuid && process.getuid() === 0;
 }
+function isSudo() {
+  return isRoot() && !!sudoUser;
+}
 const localAppData = process.env.LOCALAPPDATA;
 const isWindows = () => os.platform() === 'win32';
 const isMac = () => os.platform() === 'darwin';
-const rootPath = isWindows()
-  ? localAppData
-  : `${isRoot() ? `/home/${sudoUser}` : os.homedir()}`;
+
+let rootPath;
+if (isWindows()) {
+  rootPath = localAppData;
+} else if (isRoot() && sudoUser) {
+  rootPath = `/home/${sudoUser}`;
+} else {
+  if (isRoot()) {
+    console.info(
+      'You are running the install script as root, without SUDO. This is not recommended and should be avoided. Continuing.'
+    );
+  }
+  rootPath = os.homedir();
+}
 
 if (isWindows() && !localAppData) {
   throw new Error('LOCALAPPDATA env var is not set.');
@@ -21,6 +35,7 @@ const meteorLocalFolder = '.meteor';
 const meteorPath = path.resolve(rootPath, meteorLocalFolder);
 
 module.exports = {
+  METEOR_LATEST_VERSION,
   extractPath: rootPath,
   meteorPath,
   release: process.env.INSTALL_METEOR_VERSION || METEOR_LATEST_VERSION,
@@ -30,4 +45,5 @@ module.exports = {
   isWindows,
   isMac,
   isRoot,
+  isSudo
 };
diff --git a/npm-packages/meteor-installer/install.js b/npm-packages/meteor-installer/install.js
index b752a80f3f..fc48fc85d3 100644
--- a/npm-packages/meteor-installer/install.js
+++ b/npm-packages/meteor-installer/install.js
@@ -14,9 +14,11 @@ const {
   startedPath,
   extractPath,
   isWindows,
-  isRoot,
   rootPath,
   sudoUser,
+  isSudo,
+  isMac,
+  METEOR_LATEST_VERSION,
 } = require('./config.js');
 const { uninstall } = require('./uninstall');
 const {
@@ -24,14 +26,32 @@ const {
   extractWith7Zip,
   extractWithNativeTar,
 } = require('./extract.js');
+const semver = require('semver');
+const isInstalledGlobally = process.env.npm_config_global === 'true';
 
+if (!isInstalledGlobally) {
+  console.error('******************************************');
+  console.error(
+    'You are not using a global npm context to install, you should never add meteor to your package.json.'
+  );
+  console.error('Make sure you pass -g to npm install.');
+  console.error('Aborting');
+  console.error('******************************************');
+  process.exit(1);
+}
 process.on('unhandledRejection', err => {
   throw err;
 });
-
 if (os.arch() !== 'x64') {
-  console.error('The current architecture is not supported:', os.arch());
-  process.exit(1);
+  const isValidM1Version = semver.gte(METEOR_LATEST_VERSION, '2.5.1-beta.3');
+  if (os.arch() !== 'arm64' || !isMac() || !isValidM1Version) {
+    console.error(
+      'The current architecture is not supported in this version: ',
+      os.arch(),
+      '. Try Meteor 2.5.1-beta.3 or above.'
+    );
+    process.exit(1);
+  }
 }
 
 const downloadPlatform = {
@@ -42,9 +62,29 @@ const downloadPlatform = {
 
 const url = `https://packages.meteor.com/bootstrap-link?arch=os.${
   downloadPlatform[os.platform()]
-}.x86_64&release=${release}`;
+}.${os.arch() === 'arm64' ? 'arm64' : 'x86_64'}&release=${release}`;
 
-const tempPath = tmp.dirSync().name;
+let tempDirObject;
+try {
+  tempDirObject = tmp.dirSync();
+} catch (e) {
+  console.error('');
+  console.error('');
+  console.error('****************************');
+  console.error("Couldn't create tmp dir for extracting meteor.");
+  console.error('There are 2 possible causes:');
+  console.error(
+    '\t1. You are running npm install -g meteor as root without passing the --unsafe-perm option. Please rerun with this option enabled.'
+  );
+  console.error(
+    '\t2. You might not have enough space in disk or permission to create folders'
+  );
+  console.error('****************************');
+  console.error('');
+  console.error('');
+  process.exit(1);
+}
+const tempPath = tempDirObject.name;
 const tarGzName = 'meteor.tar.gz';
 const tarName = 'meteor.tar';
 
@@ -58,7 +98,7 @@ if (fs.existsSync(startedPath)) {
 } else if (fs.existsSync(meteorPath)) {
   console.log('Meteor is already installed at', meteorPath);
   console.log(
-`If you want to reinstall it, run:
+    `If you want to reinstall it, run:
 
   $ meteor-installer uninstall
   $ meteor-installer install
@@ -89,6 +129,7 @@ try {
     console.log('Assuming unable to create symlinks');
   }
 }
+
 download();
 
 function download() {
@@ -210,38 +251,40 @@ async function setup() {
 }
 async function setupExecPath() {
   if (isWindows()) {
+    //set for the current session and beyond
     child_process.execSync(`setx path "${meteorPath}/;%path%`);
     return;
   }
-  const appendPathToFile = async (file) => {
-    return fsPromises.appendFile(
-        `${rootPath}/${file}`,
-        `export PATH=${meteorPath}:$PATH\n`
-    );
+  const exportCommand = `export PATH=${meteorPath}:$PATH`;
 
-  }
-  if(process.env.SHELL && process.env.SHELL.includes('zsh')){
+  const appendPathToFile = async file => {
+    return fsPromises.appendFile(`${rootPath}/${file}`, `${exportCommand}\n`);
+  };
+
+  if (process.env.SHELL && process.env.SHELL.includes('zsh')) {
     await appendPathToFile('.zshrc');
-  }else {
+  } else {
     await appendPathToFile('.bashrc');
     await appendPathToFile('.bash_profile');
   }
 
-  if (!isRoot()) {
-    return;
+  if (isSudo()) {
+    // if we identified sudo is being used, we need to change the ownership of the meteorpath folder
+    child_process.execSync(`chown -R ${sudoUser} "${meteorPath}"`);
   }
-  // if we identified sudo is being used, we need to change the ownership of the meteorpath folder
-  child_process.execSync(`chown -R ${sudoUser} "${meteorPath}"`);
 }
 
 function showGettingStarted() {
+  const exportCommand = `export PATH=${meteorPath}:$PATH`;
+
+  const runCommand = isWindows()
+    ? `set path "${meteorPath}/;%path%`
+    : exportCommand;
   const message = `
 ***************************************
 
 Meteor has been installed!
 
-*You might need to open a new terminal windows to have access to the meteor command.*
-
 To get started fast:
 
   $ meteor create ~/my_cool_app
@@ -256,6 +299,12 @@ Deploy and host your app with Cloud:
 
   www.meteor.com/cloud
 
+***************************************
+You might need to open a new terminal window to have access to the meteor command, or run this in your terminal:
+
+${runCommand}
+
+For adding it immediately to your path.
 ***************************************
   `;
 
diff --git a/npm-packages/meteor-installer/package.json b/npm-packages/meteor-installer/package.json
index cc09065097..2b9f0e1d84 100644
--- a/npm-packages/meteor-installer/package.json
+++ b/npm-packages/meteor-installer/package.json
@@ -1,7 +1,7 @@
 {
   "name": "meteor",
-  "version": "2.5.0",
-  "description": "Install Meteor on Windows",
+  "version": "2.5.1-beta.9",
+  "description": "Install Meteor",
   "main": "install.js",
   "scripts": {
     "install": "node cli.js install"
@@ -14,6 +14,7 @@
     "node-7z": "^2.0.5",
     "node-downloader-helper": "^1.0.11",
     "rimraf": "^3.0.2",
+    "semver": "^7.3.5",
     "tar": "^6.1.0",
     "tmp": "^0.1.0"
   },
diff --git a/packages/accounts-passwordless/package.js b/packages/accounts-passwordless/package.js
index 5640f96188..86cfa7293f 100644
--- a/packages/accounts-passwordless/package.js
+++ b/packages/accounts-passwordless/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: 'No-password login/sign-up support for accounts',
-  version: '1.0.0',
+  version: '2.0.0',
 });
 
 Package.onUse(api => {
diff --git a/packages/accounts-passwordless/passwordless_client.js b/packages/accounts-passwordless/passwordless_client.js
index 698f3cd947..dc1e5b0bd5 100644
--- a/packages/accounts-passwordless/passwordless_client.js
+++ b/packages/accounts-passwordless/passwordless_client.js
@@ -41,7 +41,7 @@ const transformSelector = selector => {
  *   on failure.
  * @importFromPackage meteor
  */
-Meteor.loginWithToken = (selector, token, callback) => {
+Meteor.passwordlessLoginWithToken = (selector, token, callback) => {
   Accounts.callLoginMethod({
     methodArguments: [
       {
@@ -91,7 +91,7 @@ const checkToken = ({ selector, token }) => {
   const userId = Tracker.nonreactive(Meteor.userId);
 
   if (!userId) {
-    Meteor.loginWithToken(selector, token, () => {
+    Meteor.passwordlessLoginWithToken(selector, token, () => {
       // Make it look clean by removing the authToken from the URL
       if (window.history) {
         const url = window.location.href.split('?')[0];
diff --git a/packages/meteor-tool/package.js b/packages/meteor-tool/package.js
index 1bce2fb230..df3e5a2a0a 100644
--- a/packages/meteor-tool/package.js
+++ b/packages/meteor-tool/package.js
@@ -1,6 +1,6 @@
 Package.describe({
   summary: 'The Meteor command-line tool',
-  version: '2.5.0',
+  version: '2.5.1',
 });
 
 Package.includeTool();
diff --git a/scripts/admin/meteor-release-experimental.json b/scripts/admin/meteor-release-experimental.json
index 95fce6e667..88c577fe38 100644
--- a/scripts/admin/meteor-release-experimental.json
+++ b/scripts/admin/meteor-release-experimental.json
@@ -1,6 +1,6 @@
 {
   "track": "METEOR",
-  "version": "2.5-rc.1",
+  "version": "2.5.1-beta.3",
   "recommended": false,
   "official": false,
   "description": "Meteor experimental release"
diff --git a/scripts/admin/meteor-release-official.json b/scripts/admin/meteor-release-official.json
index e8fa614f33..7eb984c864 100644
--- a/scripts/admin/meteor-release-official.json
+++ b/scripts/admin/meteor-release-official.json
@@ -1,6 +1,6 @@
 {
   "track": "METEOR",
-  "version": "2.5",
+  "version": "2.5.1",
   "recommended": false,
   "official": true,
   "description": "The Official Meteor Distribution"
diff --git a/scripts/build-dev-bundle-common.sh b/scripts/build-dev-bundle-common.sh
index f8175f17e7..d94f954c1e 100644
--- a/scripts/build-dev-bundle-common.sh
+++ b/scripts/build-dev-bundle-common.sh
@@ -12,6 +12,7 @@ NPM_VERSION=6.14.15
 
 
 if [ "$UNAME" == "Linux" ] ; then
+    NODE_BUILD_NUMBER=
     if [ "$ARCH" != "i686" -a "$ARCH" != "x86_64" ] ; then
         echo "Unsupported architecture: $ARCH"
         echo "Meteor only supports i686 and x86_64 for now."
@@ -25,6 +26,7 @@ if [ "$UNAME" == "Linux" ] ; then
     }
 elif [ "$UNAME" == "Darwin" ] ; then
     if [ "$ARCH" != "arm64" ] ; then
+      NODE_BUILD_NUMBER=
       SYSCTL_64BIT=$(sysctl -n hw.cpu64bit_capable 2>/dev/null || echo 0)
       if [ "$ARCH" == "i386" -a "1" != "$SYSCTL_64BIT" ] ; then
           # some older macos returns i386 but can run 64 bit binaries.
diff --git a/scripts/dev-bundle-server-package.js b/scripts/dev-bundle-server-package.js
index f814d535a6..5cd5b07b23 100644
--- a/scripts/dev-bundle-server-package.js
+++ b/scripts/dev-bundle-server-package.js
@@ -10,7 +10,7 @@ var packageJson = {
   dependencies: {
     // Keep the versions of these packages consistent with the versions
     // found in dev-bundle-tool-package.js.
-    fibers: "5.0.0",
+    fibers: "https://github.com/meteor/node-fibers/archive/refs/tags/5.0.0-1.tar.gz",
     "meteor-promise": "0.9.0",
     promise: "8.1.0",
     reify: "0.22.2",
diff --git a/scripts/dev-bundle-tool-package.js b/scripts/dev-bundle-tool-package.js
index 07fb455a23..8d7ab23cbe 100644
--- a/scripts/dev-bundle-tool-package.js
+++ b/scripts/dev-bundle-tool-package.js
@@ -19,7 +19,7 @@ var packageJson = {
     // Keep the versions of these packages consistent with the versions
     // found in dev-bundle-server-package.js.
     "meteor-promise": "0.9.0",
-    fibers: "5.0.0",
+    fibers: "https://github.com/meteor/node-fibers/archive/refs/tags/5.0.0-1.tar.gz",
     reify: "0.22.2",
     // So that Babel can emit require("@babel/runtime/helpers/...") calls.
     "@babel/runtime": "7.15.3",
diff --git a/tools/cli/main.js b/tools/cli/main.js
index 1bc7b6f267..09a4873b3d 100644
--- a/tools/cli/main.js
+++ b/tools/cli/main.js
@@ -20,6 +20,12 @@ import { isEmacs } from "../utils/utils.js";
 
 var main = exports;
 
+if (process.platform === 'darwin' && process.arch === 'arm64') {
+  // pool size needs to be bigger on m1 because arm64 builds are using
+  // fibers with CORO_PTHREAD set. - default on fibers is 120
+  Fiber.poolSize = 250;
+}
+
 require('./flush-buffers-on-exit-in-windows.js');
 
 // node (v8) defaults to only recording 10 lines of stack trace. This
diff --git a/tools/utils/archinfo.ts b/tools/utils/archinfo.ts
index e223ad42d3..d454535355 100644
--- a/tools/utils/archinfo.ts
+++ b/tools/utils/archinfo.ts
@@ -164,7 +164,11 @@ export function host() {
           run('sysctl', '-n', 'hw.cpu64bit_capable') !== "1") {
         throw new Error("Only 64-bit Intel and M1 processors are supported on OS X");
       }
-      _host  = "os.osx.x86_64";
+      if(arch === "arm"){
+        _host  = "os.osx.arm64";
+      }else{
+        _host  = "os.osx.x86_64";
+      }
     } else if (platform === "linux") {
       const machine = run('uname', '-m');
       if (["x86_64", "amd64", "ia64"].includes(machine)) {