diff --git a/src/Backend/API.ts b/src/Backend/API.ts
index a313a28b..0974719f 100644
--- a/src/Backend/API.ts
+++ b/src/Backend/API.ts
@@ -67,6 +67,7 @@ const registerBackend = (backend: Backend) => {
   // TODO: Consider better way to refresh toolchainView after backend's registration.
   vscode.commands.executeCommand("one.toolchain.refresh");
   vscode.commands.executeCommand("one.device.refresh");
+  vscode.commands.executeCommand("one.explorer.refresh");
 };
 
 export const API = {
diff --git a/src/OneExplorer/OneExplorer.ts b/src/OneExplorer/OneExplorer.ts
index 1c9457a6..cda661a5 100644
--- a/src/OneExplorer/OneExplorer.ts
+++ b/src/OneExplorer/OneExplorer.ts
@@ -19,6 +19,7 @@ import * as fs from "fs";
 import * as path from "path";
 import * as vscode from "vscode";
 
+import { BackendContext } from "../Backend/API";
 import { obtainWorkspaceRoots } from "../Utils/Helpers";
 import { Logger } from "../Utils/Logger";
 
@@ -198,15 +199,10 @@ class NodeFactory {
           "Config nodes cannot have attributes"
         );
         const ext = path.extname(fpath);
-        switch (ext) {
-          case ".edgetpucfg": {
-            node = new ConfigNode(uri, parent, "one.editor.edgetpucfg");
-            break;
-          }
-          case ".cfg":
-          default: {
-            node = new ConfigNode(uri, parent);
-          }
+        if (BackendContext.isRegistered("EdgeTPU") && ext === ".edgetpucfg") {
+          node = new ConfigNode(uri, parent, "one.editor.edgetpucfg");
+        } else {
+          node = new ConfigNode(uri, parent);
         }
         break;
       }
@@ -1027,19 +1023,8 @@ export class OneTreeDataProvider implements vscode.TreeDataProvider<Node> {
       });
   }
 
-  /**
-   * Select the option for the configuration you want to create
-   * Return information about the selected option
-   *
-   * @param modelName A base model's name
-   * @param extName A base model's extension name
-   *
-   */
-  private async generateCfgInfo(
-    modelName: string,
-    extName: string
-  ): Promise<CfgInfo | undefined> {
-    //Options must be added according to extension
+  private async askCfgExt(extName: string): Promise<string | undefined> {
+    // Options must be added according to extension
     const options: vscode.QuickPickItem[] = [
       { label: ".cfg", description: "configuration file of onecc compiler" },
     ];
@@ -1054,7 +1039,6 @@ export class OneTreeDataProvider implements vscode.TreeDataProvider<Node> {
     const placeHolder = options.map((option) => option.label).join(" / ");
 
     let selectedLabel: string | undefined = ".cfg";
-    let cfgData: ICfgData | undefined = undefined;
 
     //If options array only has the `.cfg` option, skip selecting it.
     if (options.length !== 1) {
@@ -1065,7 +1049,23 @@ export class OneTreeDataProvider implements vscode.TreeDataProvider<Node> {
       selectedLabel = selectedOption?.label;
     }
 
-    switch (selectedLabel) {
+    return selectedLabel;
+  }
+
+  /**
+   * Select the option for the configuration you want to create
+   * Return information about the selected option
+   *
+   * @param modelName A base model's name
+   * @param extName A base model's extension name
+   */
+  private async generateCfgInfo(
+    modelName: string,
+    extName: string,
+    cfgExt: string
+  ): Promise<CfgInfo> {
+    let cfgData: ICfgData | undefined = undefined;
+    switch (cfgExt) {
       case ".cfg":
         cfgData = new CfgData();
         break;
@@ -1073,11 +1073,10 @@ export class OneTreeDataProvider implements vscode.TreeDataProvider<Node> {
         cfgData = new EdgeTPUCfgData();
         break;
       default:
-        cfgData = undefined;
-        break;
+        throw Error("OneExplorer: Cannot reach here");
     }
 
-    return cfgData?.generateCfgInfo(modelName, extName);
+    return cfgData!.generateCfgInfo(modelName, extName);
   }
 
   /**
@@ -1093,13 +1092,17 @@ export class OneTreeDataProvider implements vscode.TreeDataProvider<Node> {
     const modelName = path.parse(node.path).name;
     const extName = path.parse(node.path).ext.slice(1);
 
-    const cfgInfo = await this.generateCfgInfo(modelName, extName);
+    const cfgExt = BackendContext.isRegistered("EdgeTPU")
+      ? await this.askCfgExt(extName)
+      : ".cfg";
 
-    //When the user presses the ESC button, it is cancelled
-    if (cfgInfo === undefined) {
+    if (cfgExt === undefined) {
+      // When the user presses the ESC button, it is cancelled
       return;
     }
 
+    const cfgInfo = await this.generateCfgInfo(modelName, extName, cfgExt);
+
     // TODO(dayo) Auto-configure more fields
     const validateInputPath = (cfgName: string): string | undefined => {
       const cfgPath: string = path.join(dirPath, cfgName);
diff --git a/src/OneExplorer/OneStorage.ts b/src/OneExplorer/OneStorage.ts
index 422ade9c..100f8b87 100644
--- a/src/OneExplorer/OneStorage.ts
+++ b/src/OneExplorer/OneStorage.ts
@@ -24,6 +24,7 @@ import { Logger } from "../Utils/Logger";
 
 import { ConfigObj } from "./ConfigObject";
 import { Node, NodeType } from "./OneExplorer";
+import { BackendContext } from "../Backend/API";
 
 export {
   BaseModelToCfgMap as _unit_test_BaseModelToCfgMap,
@@ -244,7 +245,7 @@ export class OneStorage {
     };
 
     try {
-      const extList = [".cfg", ".edgetpucfg"];
+      const extList = BackendContext.isRegistered("EdgeTPU") ? [".cfg", ".edgetpucfg"] : [".cfg"];
 
       return roots
         .map((root) =>
diff --git a/src/extension.ts b/src/extension.ts
index 74dc2102..051fe47f 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -88,7 +88,7 @@ export function activate(context: vscode.ExtensionContext) {
   MPQSelectionPanel.register(context);
 
   API.registerBackend(new OneToolchain());
-  API.registerBackend(new EdgeTPUToolchain());
+  //API.registerBackend(new EdgeTPUToolchain());
 
   // returning backend registration function that will be called by backend extensions
   return API;