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wanghuangjie avatar wanghuangjie commented on June 18, 2024

如果能用dns劫持方式劫持到自己的服务器,使用原厂ota方式升级,那就避免了拆外壳等一系列动作,省事多了。我尝试了将原厂bin升级到一块nodemcu中,想看下串口信息,试了几个常用波特率,全是乱码,感觉串口在不停输出。
不知道有人抓过原厂ota或者了解这个串口调试的人是否可以贡献点信息,如果能破解原厂ota,那后续升级就好办多了

方便提供原厂的bin文件我研究下嘛?
我的邮箱是[email protected]

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Samuel-0-0 avatar Samuel-0-0 commented on June 18, 2024

原厂OTA是由服务器发起,设备收到信息后下载升级,服务器已挂,已经无法验证具体的OTA方式

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wanghuangjie avatar wanghuangjie commented on June 18, 2024

1M的那个bin文件在不带b的芯片上成功恢复
2M的那个bin文件,始终不能恢复原厂固件。

flash vendor:
A1h : FM
flash devID:
4014h
QUAD;8Mbit
crystal:
26 Mhz

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hclsl1 avatar hclsl1 commented on June 18, 2024

@wanghuangjie 不带b芯片啥意思?能看到串口打印信息吗

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wanghuangjie avatar wanghuangjie commented on June 18, 2024

@wanghuangjie 不带b芯片啥意思?能看到串口打印信息吗

分两种芯片。具体见该项目的readme。

另外,我长期在用的3台dc1,经常性的丢固件。
现在都刷回原厂,通过劫持的方式去运作了。

我手上的,不管带不带b,用1M的去恢复就可以了。

esptool.py --port /dev/tty.usbserial-A9M9DV3R -b 115200 write_flash --flash_size 1MB 0x0 /Users/wanghuangjie/Desktop/dc1_original_1M.bin

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Samuel-0-0 avatar Samuel-0-0 commented on June 18, 2024

1M的那个bin文件在不带b的芯片上成功恢复
2M的那个bin文件,始终不能恢复原厂固件。

flash vendor:
A1h : FM
flash devID:
4014h
QUAD;8Mbit
crystal:
26 Mhz

带不带b只是针对flash大小,1m的固件可以写到2m的上面正常使用,反过来不行

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