Aot4221sr Firmware Upgrade Jun 2026

device = aot_lib.open(i2c_bus=1, address=0x40) device.enter_bootloader() # verifies 0x7F == 0xA5 device.erase_sector(start=0x0000, size=32*1024) # 32KB flash device.write_firmware("aot4221sr_v2.1.3.aot", verify=True) device.reset_and_run()

Do not erase sector 0x08000000-0x0801FFFF unless you have a bootloader recovery image. aot4221sr firmware upgrade

After reload, log back in and run show version to confirm the upgrade. device = aot_lib

. If you need to check for updates manually or perform a local flash, follow these standard steps for this hardware: Access the Web Interface Connect your computer to the router via Ethernet or Wi-Fi. Open a browser and navigate to the default IP address: device = aot_lib.open(i2c_bus=1

: Ensure your computer or smartphone is connected to the AOT-4221SR via Wi-Fi or an Ethernet cable.