> For the complete documentation index, see [llms.txt](https://guide.cronuszen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.cronuszen.com/zen-pt/perguntas-frequentes/erro-300x-e3-e3001-e3002.md).

# Erro 300X (E3 / E3001 / E3002)

#### Pergunta:

***

O que significam os erros E3, E3001 ou E3002?

#### Resposta:

***

Esses códigos de erro indicam corrupção do firmware ou uma falha do sistema.

Eles normalmente ocorrem quando:

• A instalação do firmware foi interrompida\
• O dispositivo perdeu energia durante uma atualização\
• Os arquivos de firmware ficaram corrompidos

#### Como corrigir

Realize um **Redefinição de Fábrica / Recuperação de Firmware**:

1. Enter **Modo Bootloader** (mantenha pressionado o botão azul de reset enquanto conecta ao PC).
2. Vá para **firmware.modcentral.ca** usando o Chrome ou Edge.
3. Reinstale o firmware mais recente.

Se a atualização falhar, conecte ambos os **CONSOLE/PC** e **PROG** portas USB para garantir energia suficiente.


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