Firmware recovery steps for Zyxel Access Points
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Zyxel_Melen
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INTRODUCTION
This FAQ describes how to upgrade firmware from tftp server by AT commands. In
rare situations, Zyxel Access Points might not boot up successfully after a firmware upgrade. The following procedures are the steps to recover firmware to normal condition.
ENVIRONMENT
Please connect the console cable to Zyxel Access Point and RJ-45 to tftp server.
RECOVER/UPGRADE FIRMWARE
- Press any key to enter debug mode during the booting period.
- Open the tftp server (192.168.1.103) and put the firmware (.bin file) in the current directory.
- Please follow the procedures below to upgrade the firmware via tftp server (192.168.1.103).
A. WAC6503D-S> atna 192.168.1.2
B. WAC6503D-S> atns 192.168.1.103
C. WAC6503D-S> atnz <your Zyxel Access Point's firmware file name>.bin - Use the Tftp client feature to download the file.
=====================================================================
eth0 link down
dup 1 speed 1000
TFTP from server 192.168.1.103; our IP address is 192.168.1.2
Filename '420AASF1C0.bin'.
Load address: 0x80060000
Loading:
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
#################################################################
##################################################
done
Bytes transferred = 30540424 (1d20288 hex)
tftp get file: 420AASF1C0.bin, size:1d20288
420AASF1C0.bin: header_len = 652, 108, 272, 2
0x1ae1 vs 0x1ce1
0x1be1 vs 0x1ce1
0x1ce1 vs 0x1ce1
checksum = 4d59bf81, signature = deadbeaf
total_len = 1d20288, version = 100
max_model = 5, file_num = 2
head_len(R) = 108, head_len = 108
info_len(R) = 272, info_len = 272
file_offset = 648
model = 1ae1 1be1 1ce1 1de1 ffff
capwap version = 1.00.02
model_id = WAC6500
0, kernelwac6500.bin, TYPE_KERNEL, kernel, 2.6.31, 2015-05-28 17:33:54,
1179648 ,
57951123, 190000
1, jffs2_ro.img, TYPE_CODE, zldfs, 4.20(###.1), 2015-05-28 18:45:34, 29360128,
322dae2f, 2b0000
Un-Protected 1 sectors
First 0xfb last 0xfb sector size 0x10000
251
Erased 1 sectors
write addr: 9ffb0000
Protected 1 sectors
OK
Firmware Upgrading.......
Firmware Upgrade done.......
WAC6503D-S>
=====================================================================
Processing log: - Wait for about 3.0 minutes until finishing tftp download and flash programming.
Use the atsr to reboot WAC6500.
WAC6503D-S> atsr
The username prompt displays after the WAC6500 starts up successfully
Zyxel Melen
0
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