OpenWrt support for Linksys MX4200

Is it possible to restore the firmware using TFTP for this router without access to the console? There is this entry in the logs:

#################################

######### auto_recovery #########

#################################

===  enabled:1,  ===  boot_part:1,    ===  maxpartialboots:3 

boot_count_buffer_size = 2048, total number = 64 

i=10, offset = 0x1045000, last_offset = 0x1044800 

Updating boot_count... 

boot->Count:1 ,boot->CheckSum:20110812, offset:0x1045000

#### ~~~~~~~~~~~~~ ####

Auto-update from TFTP: failed, env. variable 'updatefile' not found

#### auto_recovery check ####

Hit any key to stop autoboot:  2  1  0 

Normal boot