NUCLEO-F070RB bootloader not responding

[TPryn]

i know that this question has been asked already, but it was never answered.

i am developing on a NUCLEO-F070RB development board, but cant seem to get the bootloader started. Not from software (by jumping to 0x1FFFC800 (as described in AN2606), or via the boot0 pin. And it seems like I'm not the only one.

According to another thread on the forum other people have this problem on the NUCLEO board, but not on a discovery evaluation board, with a smilair processor.

When trying to connect to the bootloader i have connected an FTDI to PA9/PA10 (also tried PA14/PA15) and attempted to connect to the bootloader via stm32flash tool (also tried STs own flasher tool) but with no response (monitored with logic analyzer).

I have also tried to connect to the DFU interface with usb lines on PA11/PA12 using dfu-util, also with no response.

Can anyone confirm that they have connected to the UART bootloader on a NUCLEO-F070RB?

[TYu.1951]

I have same problem.

I have two Nucleo-64. One is Nucleo-F411RE, the other one is Nucleo-F070RB.

Nucleo-F411RE use jump to connect boot0 to VDD, boot1(PB2) to GND. And I use PA9, PA10 to send 0x7F. It well response 0x79.

In Nucleo-F070RB, I use STM32CubeProgrammer connect Nucleo-F070RB via ST-LINK. And check nBoot1 is ON.

Use jump to connect boot0 to VDD, and reset. Use PA9, PA10 to send 0x7F always no response.

Has anybody know how to get Nucleo-F070RB boot loader work?

[TYu.1951]

Hello @TPryn​ :

We check the Nucleo-F070RB onboard chip date code is "441" and no reversion code.

"411" is mean 2014 year and 44 week.

And we buy the new STM32F070RB chip date code is "911" is made in this year. The new chip with a reversion code "03"

We replace chip on the Nucleo-F070RB. The bootloader is work.

Maybe the first version bootloader has some problem, but new version is fix.

I think you can check the date code on Nucleo-F070RB first.

Good Luck.