Open yan-064 opened 6 months ago
You need to flash the file: https://github.com/pvvx/ATC_MiThermometer/raw/master/ATC_v47.bin
README: The USB-COM adapter writes the firmware in explorer. Web version In difficult cases, when the chip contains an unknown FW, it is necessary to use a chip reset or power supply during "activation".
Thanks for your feedback.
Yes, I saw that section "in difficult cases, when the chip contains an unknown FW, it is necessary to use a chip reset or power supply during "activation", but I don't understand what I really have to do.
I tried to put TX on vbat whithin the atime period and then put it back on p14. No effect, I don't know if it is the good handling.
I'll try with the atc_v47 instead of the xiaomi_ota_1.0.0.109.
Thanks
Le dim. 10 mars 2024, 00:00, Victor @.***> a écrit :
You need to flash the file: https://github.com/pvvx/ATC_MiThermometer/raw/master/ATC_v47.bin
README: The USB-COM adapter writes the firmware in explorer. Web version https://github.com/pvvx/ATC_MiThermometer?tab=readme-ov-file#the-usb-com-adapter-writes-the-firmware-in-explorer-web-version In difficult cases, when the chip contains an unknown FW, it is necessary to use a chip reset or power supply during "activation".
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Hi, I just tried with the atc_v47, always the same result. No screen, no bluetooth. It seems to be dead.
Who could explain me how to do that please ? => "In difficult cases, when the chip contains an unknown FW, it is necessary to use a chip reset or power supply during "activation"
I ever read that "At the same time, take into account that the chip can be powered from the TX output. This is solved by connecting TX and +Vbat during "activation". But I don't understand what I exactly have to do.
Does that mean that I have to :
I'm right ?
Thanks.
After these steps, when connecting the power, you will not need to reset or connect pins on the fly and programming should be successful.
Thanks again for your help. Unfortunately, same result. I follow your steps like that :
Then I try to flash with atc_v47.bin.
Logs here : 21:02:36: USB-COM opened. 21:02:38: File was selected, size: 83028 bytes 21:03:13: Reset DTR/RTS (100 ms) 21:03:13: Activate (3 sec)... 21:03:16: Write 83028 bytes in to Flash... 21:03:47: Done (34.521 sec). 21:03:47: Soft Reset MCU
Still not working, that makes me mad. Why did I update that Xiaomi firmware before checking on the web, so stupid.
Hello,
Could you tell me if I'm doing something wrong ? I have a second thermometer on 2.1.1.0159 but I don't want to brick it 😅.
Thanks, have a good day.
@yan-064 did you get any chance solving this? I too could not get it to work. I assume the instructions were translated using google translate, so they are a bit vague. I have a FTDI based USB COM, might this be the issue?
Option 2:
https://github.com/pvvx/TlsrComSwireWriter
File "https://github.com/pvvx/TlsrComSwireWriter/blob/master/TLSR825xComFlasher.py"
There is an example here: Flashing firmware with USB to UART
I was able to install ATC fw. Then wanted to flash BTH_v47 and after that looks like my thermomether is bricked. I've spent already few hours googling and trying different things.
I have CH340 programmator. I don't know if that's a problem.
I can provide more information with photos and diagrams if needed.
@yan-064 did you get any chance solving this? I too could not get it to work. I assume the instructions were translated using google translate, so they are a bit vague. I have a FTDI based USB COM, might this be the issue?
Hello, no I gave up. I don't know why it's not working for me. I'll look at the option 2.
Option 2:
https://github.com/pvvx/TlsrComSwireWriter
File "https://github.com/pvvx/TlsrComSwireWriter/blob/master/TLSR825xComFlasher.py"
There is an example here: Flashing firmware with USB to UART
Thanks, will try this later. I'll need another UART converter, as FTDI chip is indeed not supported apparently.
Hello,
I request your help after reading a lot of issues. For the context, I tried to downgrade a LYWSD03MMC v1.4 from 2.1.1_0159 to 1.0.0_0130 and now it seems to be bricked. No screen, no bluetooth connection.
For information, I use a FT232R usb-com adapter on a Windows computer. I read that Mac users seems to have the same trouble. I tried also on a second Windows computer, same result. However, I flashed with the online tool that returned success state many times with 2 or 3 wires as described here or here.
Anyone could please help me ? I don't know what to do.
Thanks.