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Optiboot doesn't fit in 512 bytes when compiled with Toolchain 4 (Avr-gcc v15.x)

MaintainabilityFixing this should improve the readablity/maintainabiity of Optiboot.Fixing this should improve the readablity/maintainabiity of Optiboot.

Status: Open.

#384 In Optiboot/optiboot;

· WestfW opened on Nov 30, 2025

Tweak so that optiboot can be used a sort of sub-module for Studio/MPLAB projects

Component-DocsDocumentation issue or modificationDocumentation issue or modification

No-binary-changeThis issue was resolved without the popular binaries changing at all.This issue was resolved without the popular binaries changing at all.

Priority-Low

Type-Enhancement

Status: Open.

#382 In Optiboot/optiboot;

· WestfW opened on May 23, 2025

Use pin to enter bootloader

Component-Makefiles

Type-Enhancement

Status: Open.

#381 In Optiboot/optiboot;

· WestfW opened on May 22, 2025

avr-dualboot based on optiboot

AnnouncementUsually 3rd-party projects related to OptibootUsually 3rd-party projects related to Optiboot

Not-our-issueTurns out to be a bug in some other component. (compiler, make, etc)Turns out to be a bug in some other component. (compiler, make, etc)

PermanentThis issue shouldn't be closed, because it documents something "permanent"This issue shouldn't be closed, because it documents something "permanent"

Type-Enhancement

Wont-fixThis is ackowleged to be a valid issue, but we've decided we're not going to fix it.This is ackowleged to be a valid issue, but we've decided we're not going to fix it.

Status: Open.

#376 In Optiboot/optiboot;

· storepeter opened on Mar 8, 2024

MCUdude's cores no longer use optiboot

PermanentThis issue shouldn't be closed, because it documents something "permanent"This issue shouldn't be closed, because it documents something "permanent"

Status: Open.

#372 In Optiboot/optiboot;

· vanyasem opened on Oct 21, 2023

Advice: Points corresponding to AVR_Ex series

Status: Open.

#371 In Optiboot/optiboot;

· askn37 opened on Oct 21, 2023

unable to build

Status: Open.

#370 In Optiboot/optiboot;

· quantrpeter opened on Jul 12, 2023

Incompatible or no bootloader present! Please burn correct bootloader

Status: Open.

#368 In Optiboot/optiboot;

· stoutouloutou opened on Feb 10, 2023

To release version 8.3.0 or 9.0.0

Status: Open.

#361 In Optiboot/optiboot;

· mcuee opened on Dec 22, 2022

To support LGT8F328P

Status: Open.

#359 In Optiboot/optiboot;

· mcuee opened on Dec 20, 2022

Better documentation for compiling optiboot

Status: Open.

#355 In Optiboot/optiboot;

· mcuee opened on Dec 10, 2022

Use SW reset request (on Mega0, xTiny) to start application?

Optiboot-X-specificIssue affects only mega0/xTiny chips supported by optiboot_xIssue affects only mega0/xTiny chips supported by optiboot_x

Type-Enhancement

Status: Open.

#354 In Optiboot/optiboot;

· WestfW opened on Oct 23, 2022