>>21878561
It was easier than expected. Should be enough to flash it, thx for the idea. I'll update when I know, unless I release the smoke reserves from the chip LOL.
TP1 - Vcc, TP8 - Gnd
TP6 - GPIOA_0, TP9 - 36 (GPIOA_15 UART_Log_RXD), TP7 - 37 (GPIOA_16 UART_Log_TXD)
TP10 - possibly GPIOA_13 RX
If I read it correctly, TP6 and 10 go to VCC for flashing.