To reset waste ink absorber counters you have to use Service Tool V3400 under Windows XP or under other Windows OS in the compatibility mode: 1.
V3400 Canon Service Tool for all iPxxxx series, iX series, MGxxxx series, MP series printers maintenance and reset STV3400 $19.99 CANON Service Tool V3400 for all iP series, MG series, iX series, MP series printers work under Windows OS only.