对这个有些疑问，希望能够得到指导。

[hb5488]

1.download firmware_full.bin and write it into the flash

2.Read the UID of the flash first, then modify the parameters of get_uid() in enc.py and execute the script. You will get an otp.bin file for updating the OTP zone of the flash.

第2步，读取的是新写入的闪存的uid？这个是使用CH341A读取么？另外一个更新opt.bin也是用cha341a么？我看介绍说otp只能写入一次？

[KunYi]

To program your new flash device, first obtain its UID (Unique Identifier).
The CH341A programmer should work for this purpose.
This process involves OTP (One-Time Programming),
so it's important to read the flash device's datasheet to gain basic knowledge before proceeding.
For more detailed information, you can refer to the discussion on GitHub at up-n-atom/SWTG118AS#4

[hb5488]

好的，多谢。我发现我的芯片是25Q40，只有4M bit，无法刷入。正在购买推荐的fm25Q16a，等到时候进行刷新。

[huangya90]

好的，多谢。我发现我的芯片是25Q40，只有4M bit，无法刷入。正在购买推荐的fm25Q16a，等到时候进行刷新。

请问你的交换机是在哪里买的呢？型号也是SWTG118AS吗？我想买个来研究。在大陆淘宝好像搜索不到，只有aliexpress有，但是大陆不能使用aliexpress。谢谢！