# ERC Unlocker - ERC Calculator > Calculates ERC codes for compatible car audio and navigation systems. (iPhone/iPad app by Zeeshan Ahmad.) - Source: https://appshunter.io/ios/app/erc-unlocker-erc-calculator/id1347685769 (this page in markdown: same URL + `.md`) - Developer: [Zeeshan Ahmad](https://appshunter.io/developer/1320755442) - Category: Utilities - Price: Free with in-app purchases - Rating: 2.30/5 from 8 App Store ratings · 86 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 8 MB - Languages: American English, Japanese, Russian, European Spanish - Released: 2018-02-12 - Data updated: 2026-08-26 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/erc-unlocker-erc-calculator/id1347685769/reviews.md ## What is ERC Unlocker? What is an ERC Calculator? ERC Calculator is a utility app designed to help users calculate ERC codes for supported car audio and navigation systems. In some vehicles, especially imported models, the multimedia system may require an ERC code after a battery replacement or power interruption. This app provides a simple way to calculate the required code. Key Features • Fast and accurate ERC code calculation • Supports a wide range of compatible audio & navigation units • Simple and easy-to-follow instructions • Designed for convenience and quick access • Customer support available How It Works Turn on your car audio or navigation system Access the service screen to find your 16-digit serial number Enter the serial number into the app The app calculates the corresponding ERC code Enter the code into your audio unit to continue normal functionality Supported Audio Units Following is a list of units which can be unlocked by ERC code supplied by this app. etc where applicable This app is compatible with the following multimedia models: NSZT-W68T, NSZT-Y68T, NSZT-W69T, NSZN-Z68T , and NSCN-W68. NDDN-W57,ND3T,ND3T-W57,NDDN-W57,NDDN-W58,NDDN-W58-W57,NH3N-W58,NH3T-W57,NHBA-W62G,NHDA,NHDA-W61G,NHDT,NHDT-W57,NHDT-W58,NHDT-W58G,NHDT-W58-W59-W58G,NHDT-W59,NHDT-W59G,NHDT-W60G,NHZD-W62G,NHZN,NHZN-,NHZN-W57,NHZN-W57-W58,NHZN-W58,NHZN-W59C,NHZN-W59G,NHZN-W60G,NHZN-W61,NHZN-W61G,NHZT-W58,NHZT-W58G,NSCN-W59C,NSCN-W60,NSCP-W61,NSCP-W62,NSCT-W61,NSDD-W61,NSDN-W59,NSDN-W60,NSDT-W59,NSZT-W60,NSZT-W61G,NSZT-W62G,W60G,W60G-NHDT. Important Information • This app is intended for use with compatible devices only • Results depend on correct serial number input • This app is not affiliated with or endorsed by any vehicle manufacturer • Please ensure you have proper authorization to access your audio Why Choose ERC Calculator™? ERC Calculator provides a reliable and user-friendly way to calculate ERC codes and restore access to essential multimedia features after power interruptions. ## Key features - Fast ERC code calculation - Supports wide range of audio units - Simple instructions - Convenient and quick access - Customer support ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Get 1 ERC Code | $8.99 | one-time | | Get 1 68 Series ERC Code | $19.99 | one-time | ## Recent user reviews (10 of 86) All indexed reviews: https://appshunter.io/ios/app/erc-unlocker-erc-calculator/id1347685769/reviews.md ### 5/5 — It worked for us. *2026-07-05, version 1.115* Worked immediately. pls ignore the negative comments. Make sure you have the compatible system. ### 5/5 — Worked smoothly *2026-05-08* しっかりと対応機種及び使用方法を確認(1回生成に1500円)すれば、問題無く解除コードが生成されました。ありがたいですね。 Thanks for making this app. Worked smoothly. I guess you should emphasize reading the explanations ( 1 generation 1500yen) prior to usage for those who are still looking for solutions. ### 5/5 — NSZN-Z66T *2025-12-31, version 1.114* スピーカー信号を取るためにナビを外したらロックがかかってしまいました。年末でディーラーも休みのためネットで調べたらここへ辿り着きました。 問題無く解除出来ました。助かりました。ありがとうございました。 ### 5/5 — 解除できました *2025-12-28, version 1.114* ソレノイドバルブ交換時にバッテリーを外した際にロックがかかってしまいましたが、メニュー長押し+スモールオンオフ、1500円で発行されたERCコード入力で無事ナビが復活しました。 機種はNSCP W61です ### 5/5 — バッテリー上がりでナビのパスワード忘れてしまい… *2025-12-17* バッテリー上がりでナビがリセットされセキュリティコードを忘れ色々調べてこれに辿り着きました。 手順を見ながら作業しましたが無事にできました。 本当に出来るのか不安でしたが…１５００円発行の為課金あります。ディーラー行く時間など省けば良いと思います。 コードが発行された後エンジン切ると再度コードが更新されてしまい課金したコードが使えなくて失敗するみたいな事を書いてる口コミ見つけたのでエンジンはそのまま切らず、息子のスマホカメラなど使って写メしながら作業すれば大丈夫でした！ できない！詐欺とか書き込まれてますが、ご自身のナビが対応してるかなど良く見てからなら大丈夫だと思います。 ### 5/5 — 簡単！ *2025-11-24, version 1.114* ナビロックを簡単に解除するスマホアプリ というサイトで発見しました。 サービス画面への入り方も機種で違うようですが、検索ででてきます。 簡単に解除できました。ディーラーに行かなくて済みました。ちなみに1,500円掛かりました ### 4/5 — w68t *2025-11-20, version 1.114* バッテリー交換後、ロックがかかってしまったが一瞬で解除でき助かった。 ディーラーに行くよりは時間もかからない。 ただもう少し安いと使いやすいかも、、、 値上がりしてるのか3,000円だった ### 5/5 — 非常に良い *2025-11-08, version 1.114* NSCN-W68のセキュリティ解除、スムーズに出来ました。 3,000円でしたが、販売店に足を運ぶ手間を考えると、妥当な金額かと思います。 ### 1/5 — サギか？ *2025-10-11* 課金後表示されたコードを入力してもコードが違うと表示されて解除出来ない。 返金もされない。 **Developer response:** こんにちは。問題が発生したことをお詫び申し上げます。サポートにご連絡ください。弊社のチームが問題解決をお手伝いいたします。 ### 5/5 — NSZN-Z66Tで解除できました *2025-09-27, version 1.114* アプリ内課金で1500円かかりましたが、無事に解除出来ました。トヨタに持ち込むより安く出来たので、大変助かりました。 ## Frequently asked questions about ERC Unlocker ### What does this app do? This app is a utility designed to calculate ERC (Electronic Receiver Code) codes for specific car audio and navigation systems. These codes are often required after a battery replacement or power interruption to restore full functionality to your multimedia system. ### How do I use the app to get an ERC code? First, turn on your car's audio or navigation system and access its service screen to find the 16-digit serial number. Then, enter this serial number into the app. The app will then calculate the corresponding ERC code, which you can enter back into your audio unit. ### Is this app free to use? The app is free to download and use for calculating ERC codes. However, it may offer in-app purchases for additional features or services, as indicated by its monetization model. ### What car audio and navigation systems are supported? The app supports a wide range of compatible audio and navigation units, including specific models like NSZT-W68T, NSZT-Y68T, NSZT-W69T, NSZN-Z68T, NSCN-W68, and various NHDD, NH3T, NHBA, NHDA, NHDT, NHZD, NHZN, NSCN, NSCP, NSCT, NSDD, NSDN, NSDT, and NSZT models. A comprehensive list is available within the app's description. ### What happens if I enter the wrong serial number? The accuracy of the calculated ERC code depends on the correct input of your device's serial number. If an incorrect serial number is entered, the app will likely generate an incorrect code, and your audio unit may not unlock. It's important to double-check the serial number before proceeding. ## Version history (last 5 releases) ### 1.115 — 2026-03-22 What is an ERC Calculator? ERC Calculator is a utility app designed to help users calculate ERC codes for supported car audio and navigation systems. In some vehicles, especially imported models, the multimedia system may require an ERC code after a battery replacement or power interruption. This app provides a simple way to calculate the required code. Key Features • Fast and accurate ERC code calculation • Supports a wide range of compatible audio & navigation units • Simple and easy-to-follow instructions • Designed for convenience and quick access • Customer support available How It Works Turn on your car audio or navigation system Access the service screen to find your 16-digit serial number Enter the serial number into the app The app calculates the corresponding ERC code Enter the code into your audio unit to continue normal functionality Supported Audio Units Following is a list of units which can be unlocked by ERC code supplied by this app. etc where applicable This app is compatible with the following multimedia models: NSZT-W68T, NSZT-Y68T, NSZT-W69T, NSZN-Z68T , and NSCN-W68. NDDN-W57,ND3T,ND3T-W57,NDDN-W57,NDDN-W58,NDDN-W58-W57,NH3N-W58,NH3T-W57,NHBA-W62G,NHDA,NHDA-W61G,NHDT,NHDT-W57,NHDT-W58,NHDT-W58G,NHDT-W58-W59-W58G,NHDT-W59,NHDT-W59G,NHDT-W60G,NHZD-W62G,NHZN,NHZN-,NHZN-W57,NHZN-W57-W58,NHZN-W58,NHZN-W59C,NHZN-W59G,NHZN-W60G,NHZN-W61,NHZN-W61G,NHZT-W58,NHZT-W58G,NSCN-W59C,NSCN-W60,NSCP-W61,NSCP-W62,NSCT-W61,NSDD-W61,NSDN-W59,NSDN-W60,NSDT-W59,NSZT-W60,NSZT-W61G,NSZT-W62G,W60G,W60G-NHDT. Important Information • This app is intended for use with compatible devices only • Results depend on correct serial number input • This app is not affiliated with or endorsed by any vehicle manufacturer • Please ensure you have proper authorization to access your audio Why Choose ERC Calculator™? ERC Calculator provides a reliable and user-friendly way to calculate ERC codes and restore access to essential multimedia features after power interruptions. ### 1.114 — 2024-11-25 **What’s New in This Version** - Enhanced compatibility with audio models: NSZT-W68T, NSZT-Y68T, NSZN-Z68T, NSZT-W69T, and NSCN-W68. - Performance improvements and bug fixes for a smoother experience. - Optimized UI for better navigation and usability. - Update now to enjoy the latest features! ### 1.113 — 2024-11-24 **What’s New in This Version** - Enhanced compatibility with audio models: NSZT-W68T, NSZT-Y68T, NSZN-Z68T, NSZT-W69T, and NSCN-W68. - Performance improvements and bug fixes for a smoother experience. - Optimized UI for better navigation and usability. - Update now to enjoy the latest features! ### 1.112 — 2024-11-21 **What’s New in This Version** - Enhanced compatibility with audio models: NSZT-W68T, NSZT-Y68T, NSZN-Z68T, NSZT-W69T, and NSCN-W68. - Performance improvements and bug fixes for a smoother experience. - Optimized UI for better navigation and usability. - Update now to enjoy the latest features! ### 1.111 — 2024-11-21 **What’s New in This Version** - Enhanced compatibility with audio models: NSZT-W68T, NSZT-Y68T, NSZN-Z68T and NSCN-W68. - Performance improvements and bug fixes for a smoother experience. - Optimised UI for better navigation and usability. - Update now to enjoy the latest features! ## Apps similar to ERC Unlocker | App | Rating | Price | Category | | --- | --- | --- | --- | | [Deep Whois](https://appshunter.io/ios/app/deep-whois/id328895000) | 4.5 (172) | Free | Utilities | | [Handy Spreadsheet](https://appshunter.io/ios/app/handy-spreadsheet/id6444113217) | — | Free | Utilities | | [リコール情報検索](https://appshunter.io/ios/app/id1273981062) | — | Free | Utilities | | [Autoterminal Japan](https://appshunter.io/ios/app/autoterminal-japan/id6475646321) | — | Free | Utilities | | [SmartCar.mn](https://appshunter.io/ios/app/smartcarmn/id1303606164) | 4.0 (1) | Free | Utilities | | [GSign mongolia](https://appshunter.io/ios/app/gsign-mongolia/id1632833615) | 4.0 (3) | Free | Utilities | ## Related topics [erc unlocker](https://appshunter.io/ios/topics/erc-unlocker) · [unlocker](https://appshunter.io/ios/topics/unlocker) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-26.*