I'm assuming you have limited resources for helping out your beardie in Malaysia, so I'll try to keep that in mind while writing my advice. The best thing to do would be to find a reptile vet, but as you said, those kinds of things are limited...
Basically he needs a lot of calcium and a lot of unfiltered, warm sunlight (for UVA and UVB rays so he can produce Vitamin D3 to metabolize the calcium). By unfiltered, it can't go through glass or plastic or anything like that. Make sure it's warm out when you take himi outside, but don't let him overheat in the sun (give him a shady spot where he can retreat).
When he is inside, you should get a UV light for reptiles... Reptisun 5.0 is a good choice. As for food, he needs protein and calcium. For calcium, dandelion greens, collard greens, mustard greens, etc are a good base vegetable. He might not eat them though. For protein, give him small crickets or mealworms, or other similar insects you might have in your area. He might have trouble catching them if he is sick so I suggest refrigerating the insects for a short period of time before feeding them to your dragon. This way the insects will be slower and easier to catch (but be careful not to kill the insects).
If you can get it in Malaysia, a calcium powder supplement like Rep-Cal will be extremely helpful in helping your dragon recover. Dust his crickets or greens with this so he gets extra calcium. This and sunlight, should do the trick if he has the will to live.
Of course, you need to provide the other basics of beardie care, I suggest reading up on beardie nutrition, heating, enclosures, etc.
His lip and bone structure will probably be altered for the rest of his life. However, if you start giving him the things he needs now (calcium, UV, proper nutrition and care) then he'll probably live a healthy life for quite some time. Your dragon is showing clear symptoms of MBD but, as someone else said, he looks like he has some fight in him. Good luck!
Oh yeah, here is an excellent link on MDB: Metabollic Bone Disease