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Dell/SonicWall APL27-0B1 (marketed as SonicPoint ACi) is a dual band
wireless access point. Very similar to already supported APL26-0AE,
which all antennas are external, while this variant has internal
antennas. End of life as of 2022-07-31.
Specification
SoC: QualcommAtheros QCA9550
RAM: 256 MB DDR2
Flash: 32 MB SPI NOR
WIFI: 2.4 GHz 3T3R integrated
5 GHz 3T3R QCA9890 oversized Mini PCIe card
Ethernet: 2x 10/100/1000 Mbps QCA8334
port labeled lan1 is PoE capable (802.3at)
USB: 1x 2.0
LEDs: LEDs: 6x which 5 are GPIO controlled and two of them are dual color
Buttons: 1x GPIO controlled
Serial: RJ-45 port, SonicWall pinout
baud: 115200, parity: none, flow control: none
Before flashing, be sure to have a copy of factory firmware, in case You
wish to revert to original firmware.
Installation
1. Prepare TFTP server with OpenWrt sysupgrade image and rename that
image to "ap135.bin".
2. Connect to one of LAN ports.
3. Connect to serial port.
4. Hold the reset button (small through hole on side of the unit),
power on the device and when prompted to stop autoboot, hit any key.
The held button can now be released.
5. Alter U-Boot environment with following commands:
setenv bootcmd bootm 0x9F110000
saveenv
6. Adjust "ipaddr" (access point, default is 192.168.1.1) and "serverip"
(TFTP server, default is 192.168.1.10) addresses in U-Boot
environment, then run following commands:
tftp 0x80060000 ap135.bin
erase 0x9F110000 +0x1EF0000
cp.b 0x80060000 0x9F110000 $filesize
7. After successful flashing, execute:
boot
8. The access point will boot to OpenWrt. Wait few minutes, until the
wrench LED will stop blinking, then it's ready for configuration.
Notes
By default no power is provided on USB port, so attached USB devices
won't enumerate. To change that enable regulator with:
echo "enabled" > /sys/devices/platform/output-usb-vbus/state
To disable power write "disabled" to the same file.
Ther regulator state will reset on reboot, consider running this command
on hotplug event or add it to /etc/rc.local. The hotplug event should
look like this:
if [ "${PRODUCT}" = "1d6b/2/606" ] && [ "${ACTION}" = "add" ]; then
echo "enabled" > /sys/devices/platform/output-usb-vbus/state
fi
Place it in /etc/hotplug.d/usb/10-usb-power.
Known issues
Initramfs image can't be bigger than specified kernel size, otherwise
bootloader will throw LZMA decompressing error. Switching to lzma-loader
should workaround that.
Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>
Link: https://patchwork.ozlabs.org/project/openwrt/patch/20250529202033.28250-2-tmn505@terefe.re/
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>