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In the back room of "Volt & Fix," a cramped electronics repair shop in a noisy part of the city, lay the graveyard of the almost-useful. Row upon row of bricked routers, dead laptop motherboards, LCD TVs with corrupt firmware, and car radios stuck in a boot loop. For most modern repair shops, these were junk. For Lena, the 24-year-old owner, they were puzzles. And the key to solving them was a tiny, purple, USB-powered device that cost less than a pizza: the .

: SPI NAND flash (experimental), SPI F-RAMs, and specific MCUs like AVR (ATmega, ATtiny) and NUVOTON (N76E003).

: If programming in-circuit (on the motherboard), remove the CMOS battery and disconnect all power sources to avoid damaging the chip or programmer. Step-by-Step Programming Guide