ATtiny85 SOP8 SMD bootloader upload fails but DIP8 works

TECHNICAL SUPPORT Everything else
1

Customer:

I recently bought 5 ATtiny85 SOP8 (SMD) chips from another supplier. When I try to burn the bootloader and upload code to them, it fails completely. However, the same process works without any issues on regular ATtiny85 DIP8 chips. Is it possible these SMD chips are defective, or do they require a different upload method?

Original message (Croatian)

lijep pozdrav nedavno sam kupio 5 komada Attiny85 SOP8(SMD) (ne kod vas) ali kad idem spržit bootloader i uploadat nešto na njega neželi i neće dok mi sa običnim Attiny85 DIP8 sve radi bez problema.Postoji li mogučnost da su neispravni ili ti smd čipovi trebaju neki drugi način uploada.kolko vidim ne.hvala na odgovoru

Originally submitted via Facebook on 9 March 2018. Migrated to the forum for community visibility.

2

Soldered Support:

The SMD chips only have a different signature - everything else should be the same. Perhaps a basic question, but have you double-checked the connections? If you are using some type of programmer, verify the signature and the selected chip.

Original message (Croatian)

SMD chipovi imaju samo drugi signature, svi drugo bi trebalo biti isto.
Možda je glupo pitanje - ali jeste li provjerili konekcije još jednom?
Ako koristite neku vrstu programera, provjerite signature i odabrani chip.