s6 on startup no change

hi all when i press s6 on startup my shruthi will not go into update mode what should i check leds 1,3,5,7 not lighting

Where did you get the MCU?

bought it on ebay

The chip or the Shruthi? In any case, the person who made the Shruthi or sold you the chip incorrectly programmed the chip. Really sad :frowning:

sorry just the chip the boards are from you. i have my shruthi up and running just cannot boot to update mode

Where are you located? I could re flash it for you. I’m in the Netherlands. Or maybe some other shruthizen near you. Check the trusted builder list.
Or you could buy a AVRisp and do it yourself of course.

i have a usbtiny and flashed with this

avrdude -V -p m644p -c usbtiny -P ppi0 -e -U lock:w:0x3F:m -e -U efuse:w:0xFD:m -U hfuse:w:0xD6:m -U lfuse:w:0xFF:m -U lock:w:0x0f:m -U flash:w:shruthi1_1.01.hex:i -U f

and the shruthi works like a dream just no midi update

Not sure but maybe check that you have the latest muboot that’s compatible with v1.0x

I could swear you had the muboot.hex in that command line before… ?

The .hex file you have flashed contained the main program only, not the bootloader. The bootloader is a different file (muboot.hex) you have to write to flash in the same command.

ok thanks