# 300B Upgrade

> 300B Upgrade (iPhone/iPad app by 福财 黄.)

- Source: https://appshunter.io/ios/app/300b-upgrade/id6477339895 (this page in markdown: same URL + `.md`)
- Developer: [福财 黄](https://appshunter.io/developer/1269516511)
- Category: Utilities
- Price: Free
- Age rating: 17+
- Requires: iOS 11.0 · 3 MB
- Languages: American English, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2024-02-19
- Data updated: 2026-08-19
- User reviews in markdown: https://appshunter.io/ios/app/300b-upgrade/id6477339895/reviews.md

## What is 300B Upgrade?

300B Upgrade is a tool-based application that provides batch inspection and batch firmware upgrade for 300B series intelligent products to meet user product function iteration.


## Version history (last 1 release)

### 1.0.1 — 2024-02-19

No release notes.

## More apps by 福财 黄

- [RaceFit Pro](https://appshunter.io/ios/app/racefit-pro/id1171635705)
- [天天检](https://appshunter.io/ios/app/id1450048078)
- [Let Skip](https://appshunter.io/ios/app/let-skip/id1573377678)
- [BoB Wear](https://appshunter.io/ios/app/bob-wear/id1617978117)
- [FitVibe](https://appshunter.io/ios/app/fitvibe/id6458392566)

All apps by 福财 黄: https://appshunter.io/developer/1269516511

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*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 2026-08-19.*