Here is a fourth beta test for Teensyduino 1.56.
Linux 32 bit:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.linux32
Linux 64 bit:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.linux64
Linux ARM:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.linuxarm
Linux ARM64:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.linuxaarch64
MacOS 10.10 to 12.x:
https://www.pjrc.com/teensy/td_156-beta4/Teensyduino_MacOS_Catalina.zip
MacOS 10.7 to 10.14:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.dmg
Windows:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.exe
Changes since Teensyduino 1.56-beta3:
Support for Arduino 1.8.18
SD faster detection of SDIO media change (KurtE)
SdFat fix SDIO on MicroMod (mjs513)
Fix pins 38 & 39 on MicroMod
LittleFS improve erase+write speed for NOR flash chips
LittleFS fix FRAM defines
LittleFS add Write_Speed_Test example
Fix PXP_PS_CTRL register defines
Fix USB receive packet loss with MTP on Teensy 4
Audio fixes for very small buffer size (Eric Fontaine)
FreqCount fix 1st reading on Teensy 4 (mjs513)
Teensy Loader verbose info clearer Standard vs Lockable
Linux 32 bit:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.linux32
Linux 64 bit:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.linux64
Linux ARM:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.linuxarm
Linux ARM64:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.linuxaarch64
MacOS 10.10 to 12.x:
https://www.pjrc.com/teensy/td_156-beta4/Teensyduino_MacOS_Catalina.zip
MacOS 10.7 to 10.14:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.dmg
Windows:
https://www.pjrc.com/teensy/td_156-beta4/TeensyduinoInstall.exe
Changes since Teensyduino 1.56-beta3:
Support for Arduino 1.8.18
SD faster detection of SDIO media change (KurtE)
SdFat fix SDIO on MicroMod (mjs513)
Fix pins 38 & 39 on MicroMod
LittleFS improve erase+write speed for NOR flash chips
LittleFS fix FRAM defines
LittleFS add Write_Speed_Test example
Fix PXP_PS_CTRL register defines
Fix USB receive packet loss with MTP on Teensy 4
Audio fixes for very small buffer size (Eric Fontaine)
FreqCount fix 1st reading on Teensy 4 (mjs513)
Teensy Loader verbose info clearer Standard vs Lockable