diff --git a/lib/installer/manager.js b/lib/installer/manager.js
index f44462c..fa9d603 100644
--- a/lib/installer/manager.js
+++ b/lib/installer/manager.js
@@ -8,6 +8,8 @@
  * the root directory of this source tree.
  */
 
+import * as utils from '../utils';
+
 import { CompositeDisposable, Emitter } from 'atom';
 
 import AtomDependenciesStage from './stages/atom-dependencies';
@@ -16,6 +18,7 @@ import ConfigurationStage from './stages/configuration';
 import InstallerProgressModal from './progress-modal';
 import PlatformIOCoreStage from './stages/platformio-core';
 import ProjectExamplesStage from './stages/project-examples';
+import semver from 'semver';
 
 
 export default class InstallationManager {
@@ -29,7 +32,11 @@ export default class InstallationManager {
       new CodeCompletionEngineStage(this.eventbus),
       new AtomDependenciesStage(this.eventbus),
       new ProjectExamplesStage(this.eventbus),
-      new PlatformIOCoreStage(this.eventbus)
+      new PlatformIOCoreStage(this.eventbus, {
+        useBuiltinPIOCore: atom.config.get('platformio-ide.useBuiltinPIOCore'),
+        setUseBuiltinPIOCore: (value) => atom.config.set('platformio-ide.useBuiltinPIOCore', value),
+        useDevelopmentPIOCore: atom.config.get('platformio-ide.advanced.useDevelopmentPIOCore') || semver.prerelease(utils.getIDEVersion())
+      })
     ];
 
     this.progress = new InstallerProgressModal({
diff --git a/lib/installer/stages/base.js b/lib/installer/stages/base.js
index fbfd480..eb02ba9 100644
--- a/lib/installer/stages/base.js
+++ b/lib/installer/stages/base.js
@@ -17,8 +17,9 @@ export default class BaseStage {
 
   static STORAGE_STATE_KEY = 'platformio-ide:installer-state';
 
-  constructor(eventbus) {
+  constructor(eventbus, params = {}) {
     this.eventbus = eventbus;
+    this.params = params;
     this._status = BaseStage.STATUS_CHECKING;
   }
 
diff --git a/lib/installer/stages/platformio-core.js b/lib/installer/stages/platformio-core.js
index 420c0f6..dffa89b 100644
--- a/lib/installer/stages/platformio-core.js
+++ b/lib/installer/stages/platformio-core.js
@@ -234,7 +234,7 @@ export default class PlatformIOCoreStage extends BaseStage {
   async installPIOCore() {
     let cmd = 'pip';
     const args = ['install', '--no-cache-dir', '-U'];
-    if (atom.config.get('platformio-ide.advanced.useDevelopmentPIOCore') || semver.prerelease(utils.getIDEVersion())) {
+    if (this.params.useDevelopmentPIOCore) {
       cmd = path.join(config.ENV_BIN_DIR, 'pip');
       args.push('https://github.com/platformio/platformio/archive/develop.zip');
     } else {
@@ -324,7 +324,7 @@ export default class PlatformIOCoreStage extends BaseStage {
   }
 
   async check() {
-    if (atom.config.get('platformio-ide.useBuiltinPIOCore')) {
+    if (this.params.useBuiltinPIOCore) {
       if (!fs.isDirectorySync(config.ENV_BIN_DIR)) {
         throw new Error('Virtual environment is not created');
       }
@@ -335,8 +335,8 @@ export default class PlatformIOCoreStage extends BaseStage {
 
     const coreVersion = await utils.getCoreVersion();
     if (semver.lt(PEPverToSemver(coreVersion), config.PIO_CORE_MIN_VERSION)) {
-      atom.config.set('platformio-ide.useBuiltinPIOCore', true);
-      throw new Error('Incompatible PIO Core', coreVersion);
+      this.params.setUseBuiltinPIOCore(true);
+      throw new Error(`Incompatible PIO Core ${coreVersion}`);
     }
 
     this.status = BaseStage.STATUS_SUCCESSED;
@@ -348,7 +348,7 @@ export default class PlatformIOCoreStage extends BaseStage {
     if (this.status === BaseStage.STATUS_SUCCESSED) {
       return true;
     }
-    if (!atom.config.get('platformio-ide.useBuiltinPIOCore')) {
+    if (!this.params.useBuiltinPIOCore) {
       this.status = BaseStage.STATUS_SUCCESSED;
       return true;
     }