Tutorial [UNBRICK] Mi Band 3 (with | without NFC)

tejca

New member
Joined
Oct 28, 2020
Messages
6
Likes
2
Points
3
#22
I have build flashrom circuit like this one but on my schematic the pins 17 and 18 are swaped. And I use 12MHz oscilator on OSCI input. The windows 7 recognise ftdi2232HL chip and I have modified pcb to this schematic. But it does not recognise any of two spi flash chips I have tried (windond 25Q32 and 25Q80).
Any suggestion?
 

rendal

Well-known member
Contributor
Joined
Aug 29, 2018
Messages
913
Likes
764
Points
103
#23
I have build flashrom circuit like this one but on my schematic the pins 17 and 18 are swaped. And I use 12MHz oscilator on OSCI input. The windows 7 recognise ftdi2232HL chip and I have modified pcb to this schematic. But it does not recognise any of two spi flash chips I have tried (windond 25Q32 and 25Q80).
Any suggestion?
Replacing "serial input" with "serial ouput" can be a problem. Try to switch, there is no risk of damage to the device. What control software do you use? Special drivers may be required (described in the thread).
 

tejca

New member
Joined
Oct 28, 2020
Messages
6
Likes
2
Points
3
#24
finaly it worked ... I have left the connection to my flash spi eprom as I had it before and went throu the list when flashrom went probing what kind of chip I had connected and the I have found which one was the right one.
Thank you for suggestion.
 

tejca

New member
Joined
Oct 28, 2020
Messages
6
Likes
2
Points
3
#25
The control software is flashrom and is downloaded from here becos it uses spi protocol and is compiled only for FTDI2232H chip.
 

rendal

Well-known member
Contributor
Joined
Aug 29, 2018
Messages
913
Likes
764
Points
103
#26
The control software is flashrom and is downloaded from here becos it uses spi protocol and is compiled only for FTDI2232H chip.
Yes, the flashrom is only compiled for the FTDI2232H chip. I compiled directly for Windows because I could not find the existing compiled version for Windows for the FTDI2232H chip.
 

tejca

New member
Joined
Oct 28, 2020
Messages
6
Likes
2
Points
3
#27
I needed this program and programator for eprom which was in a Blaupunkt TV so I could put new software on a chip cos obviously program data has become currupt. So thank you for succha great work you have made compiling this program only for FTDI2232H chip.
 

limontodo

New member
Joined
Nov 19, 2020
Messages
1
Likes
0
Points
1
#28
@rendal What other programmers apart from FTDI2232H or FT2232HL can be used? Just have the adbus0~5 pins and the correct voltage outputs? I'm looking for something very cheap and basic enough to program this chip. Thanks in advance and sorry for my bad english.
 

rendal

Well-known member
Contributor
Joined
Aug 29, 2018
Messages
913
Likes
764
Points
103
#29
@rendal What other programmers apart from FTDI2232H or FT2232HL can be used? Just have the adbus0~5 pins and the correct voltage outputs? I'm looking for something very cheap and basic enough to program this chip. Thanks in advance and sorry for my bad english.
If you write the Firmware to the microcontroller and the operating software for the PC, you can use any microcontroller with the required number of I / O pins.
If you are wondering which chip can be used with the service SW mentioned in the article, then only the FTDI2232H chip can be used for this ready-made solution.
 

Trusted Store

Members online

No members online now.

Our Telegram Channel

Which color of official strap would you like to buy for your Mi Band 3?

  • Black

    Votes: 2,156 52.8%
  • Deep Blue

    Votes: 1,198 29.3%
  • Redish Orange

    Votes: 729 17.9%

Forum statistics

Threads
2,457
Messages
40,626
Members
212,011
Latest member
quanoot
Top