Gps TOMTOM calibration

Device : Canada 310 XL , or others

we must change for [up / down] only 2 right values (662 and 320)
to see original values hold power button until the screen with values

original values for tomtom XL

Original Values

819    225     662      320

Working Values

819    225     640      340

A B – LEFT / RIGHT

XY –  UP/ DOWN

A          B        X            Y

 

 

 

 

dimm beta formula = X-22 , y +20 ( ex : 662 -22 ; and 320 +20 )
[original value – 22 , original value +20]

 

 

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