MicroCore doesn't work after update Arduino IDE for ver. 2.3.4

[Denexp-1]

When I'm trying to load bootloader to ATtiny13 have errors:

Avrdude version 8.0-arduino.1
Copyright see https://github.com/avrdudes/avrdude/blob/main/AUTHORS

System wide configuration file is C:\Users\xxxxxxx\AppData\Local\Arduino15\packages\MicroCore\tools\avrdude\8.0-arduino.1\etc\avrdude.conf

Using port : COM37
Using programmer : stk500v1
Setting baud rate : 19200
Setting bit clk period: 32.0 us

Error: cannot get into sync
Error: cannot set Parm_STK_SCK_DURATION
Error: unable to open port COM37 for programmer stk500v1

Avrdude done. Thank you.
Failed chip erase: uploading error: exit status 1

[JoergCH]

I can confirm that there is problem. It has (probably) nothing to do with the Arduino version but (probably) with the update of MicroCore to 2.4.1, or to a related update in Avrdude (from 7.2 to 8.0).

On a system with Arduino 2.3.2 and MicroCore 2.4.0, I have no issues at all.

On another system with Arduino 2.3.4 and MicroCore 2.4.1, I have issues when I try to burn a bootloader:

Avrdude version 8.0-arduino.1
Copyright see https://github.com/avrdudes/avrdude/blob/main/AUTHORS

System wide configuration file is /home/xxx/.arduino15/packages/MicroCore/tools/avrdude/8.0-arduino.1/etc/avrdude.conf
User configuration file /home/xxx/.avrduderc does not exist

Using port            : /dev/ttyUSB0
Using programmer      : stk500v1
Setting baud rate     : 19200
Setting bit clk period: 32.0 us

Error: cannot get into sync
Error: cannot set Parm_STK_SCK_DURATION
Error: unable to open port /dev/ttyUSB0 for programmer stk500v1

Avrdude done.  Thank you.
Failed chip erase: uploading error: exit status 1

On that same system, I kept Arduino 2.3.4 but reverted back to MicroCore 2.4.0. Now everything works:

avrdude: Version 7.2-arduino.1
        Copyright the AVRDUDE authors;
        see https://github.com/avrdudes/avrdude/blob/main/AUTHORS

        System wide configuration file is /home/xxx/.arduino15/packages/MicroCore/hardware/avr/2.4.0/avrdude.conf
        User configuration file is /home/xxx/.avrduderc
        User configuration file does not exist or is not a regular file, skipping

        Using Port                    : /dev/ttyUSB0
        Using Programmer              : stk500v1
        Overriding Baud Rate          : 19200
        Setting bit clk period        : 32.0
        AVR Part                      : ATtiny13A
        Chip Erase delay              : 4000 us
        RESET disposition             : dedicated
        RETRY pulse                   : SCK
        Serial program mode           : yes
        Parallel program mode         : yes
        Timeout                       : 200
        StabDelay                     : 100
        CmdexeDelay                   : 25
        SyncLoops                     : 32
        PollIndex                     : 3
        PollValue                     : 0x53
        Memory Detail                 :

                                          Block Poll               Page                       Polled
          Memory Type Alias    Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
          ----------- -------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
          eeprom                 65     5     4    0 no         64    4      0  4000  4000 0xff 0xff
          flash                  65     6    32    0 yes      1024   32     32  4500  4500 0xff 0xff
          lfuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
          hfuse                   0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
          lock                    0     0     0    0 no          1    1      0  4500  4500 0x00 0x00
          signature               0     0     0    0 no          3    1      0     0     0 0x00 0x00
          calibration             0     0     0    0 no          2    1      0     0     0 0x00 0x00

        Programmer Type : STK500
        Description     : Atmel STK500 version 1.x firmware
        Hardware Version: 2
        Firmware Version: 1.18
        Topcard         : Unknown
        Vtarget         : 0.0 V
        Varef           : 0.0 V
        Oscillator      : Off
        SCK period      : 0.1 us
avrdude: AVR device initialized and ready to accept instructions
avrdude: device signature = 0x1e9007 (probably t13a)
avrdude: erasing chip

avrdude: processing -U lock:w:0xff:m
avrdude: reading input file 0xff for lock
        with 1 byte in 1 section within [0, 0]
avrdude: writing 1 byte lock ...
avrdude: 1 byte of lock written
avrdude: verifying lock memory against 0xff
avrdude: 1 byte of lock verified

avrdude: processing -U hfuse:w:0xeb:m
avrdude: reading input file 0xeb for hfuse
        with 1 byte in 1 section within [0, 0]
avrdude: writing 1 byte hfuse ...
avrdude: 1 byte of hfuse written
avrdude: verifying hfuse memory against 0xeb
avrdude: 1 byte of hfuse verified

avrdude: processing -U lfuse:w:0b00111010:m
avrdude: reading input file 0b00111010 for lfuse
        with 1 byte in 1 section within [0, 0]
avrdude: writing 1 byte lfuse ...
avrdude: 1 byte of lfuse written
avrdude: verifying lfuse memory against 0b00111010
avrdude: 1 byte of lfuse verified

avrdude done.  Thank you.

My suggestion for a workaround: revert back to 2.4.0.

[Denexp-1]

OK I'll check it with WA. Thanks a lot for your investigation and answer!

[Denexp-1]

Yes, it works Arduino IDE 2.3.4 and MicroCore 2.4.0.