ESP-07-2-007-03/V1.5 www.espressif.com Page 1 / 5 取消 ESP8266 系列模组产品出厂配置乐鑫通用 AT 固件 Discontinuation of Default Flashing Espressif Common AT Firmware on ESP8266 Series Modules PCN 编号 PCN No. PCN20250601 提出日期 Issue Date of PCN 2025/06/26 变更日期 Proposed Date of Change 2025/07/14 预计变更后产品首次出货日期 Proposed Date of First Shipment After Change 2025/07/30 PCN 类型 PCN Category R 客户需要批准/ Customer Approval Required £客户通知/ Customer Notification 1. 影响产品名称/ Affected Product Name 产品名称/ Product Name 订购代码/ Ordering Code ESP-WROOM-02 ESP-WROOM-02(M1002H1600PH3Q0) ESP-WROOM-02 ESP-WROOM-02-N2 ESP-WROOM-02 ESP-WROOM-02-N4 ESP-WROOM-02D ESP-WROOM-02D(M1102H1600PH3Q0) ESP-WROOM-02D ESP-WROOM-02D(M1102H1600PS3Q0) ESP-WROOM-02D ESP-WROOM-02D(M1102H3200PH3Q0) ESP-WROOM-02D ESP-WROOM-02D-H2 ESP-WROOM-02D ESP-WROOM-02D-N2 ESP-WROOM-02D ESP-WROOM-02D-N4 ESP-WROOM-02U ESP-WROOM-02U(M1102H1600UH3Q0) ESP-WROOM-02U ESP-WROOM-02U(M1102H1600US3Q0) ESP-WROOM-02U ESP-WROOM-02U(M1102H3200UH3Q0) ESP-WROOM-02U ESP-WROOM-02U-H2 ESP-WROOM-02U ESP-WROOM-02U-N2 ESP-WROOM-02U ESP-WROOM-02U-N4 2. 变更原因/ Reason for Change ESP-07-2-007-03/V1.5 www.espressif.com Page 2 / 5 根据对客户实际使用情况的调查，大部分采购段落 1 中所述模组的客户未使用乐鑫通用 AT 固件，少 数 使用 AT 固件的客户对固件版本有不同要求。因此，段落 1 中所述模组在出厂前将不预烧录乐鑫通用 AT 固件。 Based on the actual customer usage data, most of the customers who purchased modules mentioned in Para 1 did not use Espressif common AT firmware. Among the few who did, there were varying requirements for firmware versions. Therefore, Espressif will not flash the Espressif common AT firmware on the modules in Para 1 before shipment. 3. 变更描述/ Description of Change 段落 1 中列出的模组出货时，不配置乐鑫通用 AT 固件。 No Espressif common AT firmware will be flashed on the modules listed in Para 1. 4. 变更对比/ Change Comparison 请见附录 I：变更对比。 Please refer to Appendix I: Change Comparison. 识别方式/ Identification Method:  通过包装标签信息识别该变更。 Identify the change by querying the Package Label Information. 5. 变更影响/ Impact of Change 1) 品质和性能/ Quality & Performance: 由于产品的硬件未做变更，如贵司不使用上述模组出厂配置的乐鑫通用 AT 固件，则此变更对产品品质、性能及使用均无影响；如贵司使用上述模组出厂时配置的乐鑫通用 AT 固件，请及时联系对接的商务人员或 sales@espressif.com，我们将提供定制生产。 There are no hardware changes to the products mentioned in Para 1. Therefore, if you don't use Espressif common AT firmware, this change will have no impact on the quality, performance, and usage of such products. However, if you do, please contact your business contacts at Espressif or via sales@espressif.com. We will provide customized production to your needs. 2) 交期/ Delivery: 无影响/ No impact 3) 订购代码/ Ordering Code: 无影响/ No impact 4) 软件/ Software: 无影响/ No impact ESP-07-2-007-03/V1.5 www.espressif.com Page 3 / 5 5) 认证/ Certification: 无影响/ No impact 6) 技术规格书/ Datasheet: 无影响/ No impact 6. 变更前后产品处理/ How to Deal with Products FIFO 7. 给使用者的验证建议/ Verification Suggestion to Users 如贵司不使用上述模组出厂配置的乐鑫通用 AT 固件，则此变更对产品品质、性能及使用均无影响。 如贵司使用上述模组出厂时配置的乐鑫通用 AT 固件，请及时联系对接的我司商务人员或 sales@espressif.com，我们将提供定制生产。 If you don't use Espressif common AT firmware, this change will have no impact on the quality, performance, and usage of such products. However, if you do, please contact your business contacts at Espressif or via sales@espressif.com. We will provide customized production to your needs. ESP-07-2-007-03/V1.5 www.espressif.com Page 4 / 5 Appendix I 变更对比/ Change Comparison Item 变更前 Before Change 变更后 After Change  产品名称 Product Name 无变化 No Changes 丝印 Marking 无变化 No Changes 固件料号 Firmware PN ESP02U006 NA 标签（含固件版本信息） Firmware Version Information on Product Label 固件校验 Firmware Check 通过串口 AT 指令査询 AT 版本号 Query AT version number through serial AT command 发送 Send: AT+GMR 返回 Reply: AT version: 1.7.3.0 NA ESP-07-2-007-03/V1.5 www.espressif.com Page 5 / 5 邮件订阅 Espressif Email Notifications 乐鑫为注册用户提供电子邮件通知服务，用户可通过乐鑫订阅系统接收技术文档更新、新闻通讯、PCN 等邮件通知。 Espressif sends email notifications of technical documentation changes, along with newsletters, PCNs and other valuable information, to subscribed customers only. If you wish to stay updated on our products and services, please subscribe here. 客户响应要求 Customer Response Requirements 需客户批准的变更/ Change Requiring Customer Approval： a) 客户须在乐鑫发出 PCN 后的 30 天内告知乐鑫已收到 PCN。如客户未在接收到 PCN 后的 30 天内告知已收到，则视为客户收到变更。 Customers are requested to acknowledge receipt of the PCN within 30 calendar days from the date of issue of the PCN. Customers would be considered as notified 30 calendar days after issue of the PCN if no acknowledgement is received. b) 自发布 PCN 之日起 90 天内，客户没有任何其他反馈，则表示客户接受该 PCN。 The lack of any additional responses from customers within 90 calendar days from the date of issue of the PCN constitutes acceptance of the proposed changes. 客户通知/ Customer Notification： a) 客户需在乐鑫发出 PCN 后 14 天内通知乐鑫收到该 PCN。如客户未在接收到 PCN 14 日反馈乐鑫，则视为客户确认该 PCN。 Customers are requested to acknowledge receipt of the PCN within 14 calendar days from the date of issue of the PCN. Customers would be considered as having acknowledged the PCN if no response is received after 14 calendar days. 请反馈至 pcn@espressif.com。 Please send feedback to pcn@espressif.com. 客户批准/确认信息 Customer Approval / Acknowledgement and Remarks 客户公司全称： Customer’s Company Name: PCN 评审结果 PCN Review Result £批准/确认 Accepted / Acknowledged £不批准 Rejected £需要分析 Further Analysis Required 客户意见/ Comment: 公司代表人姓名 Representative’s Name 公司代表人职责 Representative’s Job Title 公司代表人签名 Representative’s Signature 日期 Date