Preliminary information: see the practical information for the starting point.
(S/E) From the car park, take the yellow-marked path that climbs up the Torrent des Pertusets on the right bank towards Le Faï, to the north-west.
(1) At the Faï sign, continue to follow the yellow markings along the torrent in the same direction towards Fouzéou. The poorly marked trail crosses the torrent at around 1,400 metres and heads east to Fouzéou.
(2) At the Fouzéou sign, take the left-hand track towards Vallon des Narrites (north-west). The track passes by the Fontaine de l'Adroit (sign), veering slightly to the left, west-north-west. Take the right-hand branch at the first crossroads after the fountain and head north for a few hundred metres. The track then veers left, heading due west, to climb straight up the slope in the middle of Vallon des Narrites.
At around 1,700 m, the track disappears, but the obvious route (due west in the middle of the valley) is marked by a few cairns. Two tiny rocky outcrops are easily bypassed before reaching a vast plateau at around 2000 m. From this plateau, a pass to the north-west is clearly visible, see this location photo. Climb the shoulder heading north and the base of the pass marked 2246 m on the IGN topographical map.
The Devolud stairs leading over the pass are on the right-hand side and are much less difficult than they appear.
(3) At the 2246 m pass, turn left due west to take the shoulder and then the ridge leading to the summit. The slope becomes a little steeper, but the ridge is comfortable and safe. This will take you to the summit.
(4) From the summit, descend the south ridge and take the opportunity to visit the limestone formations of Pras d'Oriol (see photo). When the ridge becomes uncomfortable, descend the steep slope on the south-east face of Tête de l'Aupet. At around 2380m, head south to quickly reach the less steep slopes of Les Grépoux, and aim for the pass between the Butte des Prêtres and the Tête d'Oriol. Proceed with caution if there is still snow, as this area is dotted with karstic caves.
(5) After the karstic caves, continue the descent south-southeast on the steep slopes below La Demoiselle (see photo) to reach the Vallon de Truchière valley.
Follow this valley due east. As you pass, look to your right (south) to see a beautiful arch forming at the foot of the Crête de l'Étoile and the Baume Méanne at the narrow point marking the exit from the Vallon de Truchière.
Shortly after this narrow passage, you will arrive at a wet plateau with a peat bog.
(6) At the bog, turn sharply left to the east-northeast to descend a path with very few cairns that leads into the shrubs. Look out for the next cairn each time you pass one. The path joins a track suitable for vehicles.
(7) Descend this track marked with yellow lines until you reach the Fouzéou sign.
(2) At this point, turn right towards Le Faï to retrace your steps and return to the starting point (S/E).
Whether you use paper or your phone isn't that important (except that paper has a much higher carbon footprint since you have to use a computer to print it out anyway)