In fact it is a simple procedure, I believe that anyone can do, the difficulties and solutions I mentioned earlier, has no secret. The "biggest" problem was entering in pre-boot, but there was a lack of knowledge itself. Enter by pressing and holding the Power button, only. Not tried with hybrid G5/x00 fw, only the full. In the next days I will do some field tests comparing the accuracy of track records with the Etrex 30, but apparently it's all perfect. Maybe that a tutorial for absolute lay people might be useful. After I make several tests and repeat the procedure will provide the "tutorial" ...
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