Wladston,
I'll have to do some tests but I think that I have to update my guide : I discovered a method to remove the glass easily and the first steps become very easy... It is not a major update, so when I'll update this guide I'll put also good pic by using my friend's mother's digital camera

and by the way a good part of the begin of the guide would be removed.
And just a lil' thing about my player, you'll probably ask me to verify everywhere, but everywhere I looked and nothing I got. I cannot see any board ID!!! Nothing in white is written , BUT I have 2 things written in green : in a white square I have a green "ZD 0411" and next to my (-) battery pole, below my Mini-USB plug : "Ver 1.2 LAURA"... When I discovered that, I decided to name my player Laura =D
Take a look of my hot boot/bye animations:
Go to Gallery section you Kirby lovers

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ZD 0411 Ver 1.2 LAURA, 512MB, 7 colours, no FM