This is the most critical update for industrial users. Older firmware had aggressive garbage collection on TLC NAND, leading to premature wear. The new Flash Technology (FTL) v2.3 algorithm reduces write amplification. If you are deploying A133 in a logging environment, this update is mandatory.
apt-get update && apt-get install allwinner-firmware-a133-2025.03 allwinner a133 firmware updated
#!/bin/bash
echo "Waiting for FEL device..."
sunxi-fel wait
echo "Flashing U-Boot..."
sunxi-fel write 0x2000 u-boot-sunxi-with-spl.bin
echo "Flashing boot..."
sunxi-fel write 0x2000000 boot.img
echo "Flashing system..."
sunxi-fel write 0x4000000 system.img
echo "Reset device"
sunxi-fel exec 0x2000
| Mode | Trigger | Use |
|------|---------|-----|
| Normal | eMMC/NAND boot | Standard boot |
| Recovery | Key combo (Vol+ + Power) | Apply OTA updates |
| FEL (USB burning) | Hold FEL button + reset | Low-level flashing (boot ROM) |
| Fastboot | reboot fastboot | Partition-level updates | This is the most critical update for industrial users
While the Allwinner A133 firmware updated process is generally smooth, some users have reported post-update anomalies: | Mode | Trigger | Use | |------|---------|-----|
Issue 1: Touchscreen becomes unresponsive after update.
Issue 2: Wi-Fi MAC address changes to 00:00:00:00:00:00.
Issue 3: Boot loop after update (stuck on Allwinner logo).
