USBCom Flash connector layout for ZY-ZTH02Pro

[wta12]

I want to verify the connector layout for ZY-ZTH02Pro. The layout shows battery and RST but but I could not find SWS on actual layout
Instructions

Layout

[pvvx]

ZTU Module

[wta12]

I used RXD2 (top right) as SWS but the display off after flash. How to check if i bricked and do reflash ??

[pvvx]

Сan always reflash the firmware.
The exception is if you burn the chip by supplying more than 3.6V.

[wta12]

Is there any way to verify if mcu can respond to a flasher ?? My USB-UART has hard switch for 3.3V so it's hard to get 5V. the main issue is blank display and response

…

On Wed, Jan 7, 2026 at 5:38 PM Victor ***@***.***> wrote: Сan always reflash the firmware. The exception is if you burn the chip by supplying more than 3.6V. — Reply to this email directly, view it on GitHub <#763 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AD47GP3IJDI5VUCRI5CXHW34FWYHPAVCNFSM6AAAAACQZD7BN2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKNBTHE4DKOA> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[pvvx]

README
Alternative programmers:

TLSR825xComFlasher.py - partial simulation of Telink 1-Wire on a USB-UART adapter.
TlsrComProg - uses a bootloader with the transition to working via the UART protocol.
TLSRPGM - full hardware option Telink 1-Wire up to 2 mbit/s

BDT + EVK from Telink
https://wiki.telink-semi.cn/wiki/IDE-and-Tools/Burning-and-Debugging-Tools-for-all-Series/
https://pvvx.github.io/BDT/