AP WA2620-AGN 胖模式切换瘦模式后卡死无法进入系统

这是原胖模式的版本信息：

[WA2620i-AGN]dis version 

H3C Comware Platform Software 

Comware Software, Version 5.20, Release 1306 

Copyright (c) 2004-2013 Hangzhou H3C Tech. Co., Ltd. All rights reserved. 

H3C WA2620i-AGN uptime is 0 week, 0 day, 0 hour, 4 minutes 

 CPU type: ATHEROS AR9350 

 128M bytes DDR2 SDRAM Memory 

 32M bytes Flash Memory 

 Pcb Version: Ver.E 

 CPLD Version: 004 

 Basic BootROM Version: 2.07 

 Extend BootROM Version: 2.07 

 [SLOT 1]CON (Hardware)Ver.E, (Driver)1.0, (Cpld)4.0 

 [SLOT 1]GE1/0/1 (Hardware)Ver.E, (Driver)1.0, (Cpld)4.0 

 [SLOT 1]RADIO1/0/1 (Hardware)Ver.E, (Driver)1.0, (Cpld)4.0 

 [SLOT 1]RADIO1/0/2 (Hardware)Ver.E, (Driver)1.0, (Cpld)4.0

通过ap-mode fit 切换瘦模式重启后无法进入系统，卡在一下页面：

BootWare Validating... Press Ctrl+B to enter extended boot menu... Starting to get the main application file--flash:/wa2600a_fit.bin! The main application file does not exist--flash:/wa2600a_fit.bin! Starting to get the backup application file--flash:/wa2600a_fat.bin! The backup application file does not exist--flash:/wa2600a_fat.bin! Starting to get the secure application file--flash:/wa2600a_fit.bin! The secure application file does not exist--flash:/wa2600a_fit.bin! Booting App fails! Trying to get the IP address from the DHCP server......

求解决方案！