I got one of these and updated the firmware. After that, it worked for 2 days and now it won't return a device descriptor. Is that common?

I updated both units I have with no issues.

How do you get the pcb out of the case? i want to check pinouts on the silkscreen vs. the case. thank you...

Based on others who have opened the case...the silkscreen is accurate for Hiletgo . This was the case for mine even those it was reversed from the picture. So I chose not to open the case and trusted the markings with good results. HiLetgo has several manufacturing batches ...but the markings match the hardware it seems.

Can someone tell me what exactly these are for? Can i reprogram an electric scooter?

Used mine to reprogram my frsky R9 module

Hiletgo St Link V2 Emulator Downloader Programmer Stm32f103c8t6 Stm8 Stm32

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Description

⚡ Debug smarter, not harder — power, precision, and portability in one sleek programmer!

FUTURE PROOF FIRMWARE - Supports automatic firmware upgrades ensuring compatibility with latest STM products.
PLUG PLAY SIMPLICITY - Clearly marked interface and 20cm flexible DuPont cable for effortless wiring and setup.
POWER UP WITH CONFIDENCE - Enhanced 5V output with I/O port protection guards against operational mishaps.
RUGGED PORTABLE DESIGN - Durable aluminum housing shields against static, drops, and daily wear—carry your dev tool anywhere.
VERSATILE DEBUGGING POWERHOUSE - Full support for STM32 SWD and STM8 SWIM debugging across popular IDEs like IAR, KEIL, and STVD.

The HiLetgo ST-Link V2 Emulator is a compact, durable programmer supporting STM32 and STM8 microcontrollers with a fast 4-wire SWD interface. It features enhanced 5V power output with port protection, flexible wiring via a 20cm DuPont cable, and automatic firmware upgrades to keep you ahead. Compatible with major development environments, it’s the essential tool for professional embedded developers seeking reliable, portable debugging and programming.

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ASIN	B07SQV6VLZ
Best Sellers Rank	#14,673 in Computers ( See Top 100 in Computers ) #1,071 in USB Cables
Manufacturer	HiLetgo
Package Dimensions	8.79 x 4.5 x 0.89 cm; 18 g

HiLetgo ST-Link V2 Emulator Downloader Programmer STM32F103C8T6 STM8 STM32 with Cable (Random Color)

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