Enchanting and Upgrading

Enchanting
An enchanted item adds more damage to the item and also adds a glow to the item, more noticeable on weapons so all I'm listing

These are the glows on weapons at certain percents:

0%- a blue sparkle
3-39%- white/silver
42-78%- orange/fiery
81-93%- pink
96-105%- red
108-120%- yellow
120% is max enchanted and very hard to reach

Beware, there are some risks to enchanting.
When enchanting an item that is already enchanted the item can lose 3% enchant when failed.
Enchanting gets even more dangerous at 57% because when enchanting to or past 57% your item can break, deeming the item worthless.
The only way to prevent this from happening is with a Protection Charm that can be purchased in the Item Mall for 3.700AP or awarded as a mighty reward,
this will stop your item from breaking one time, will not be used until the item would have broken, meaning you can have failed attempts with the Protection Charm on without breaking the Protection Charm.
There are Lucky enchants which give you a 5% better chance to enchant and item for once use and then act as a Protection Charm.

Critical % & most breakable points are: 66%, 75%, 90%

To enchant an item you have to go to one of two NPC.
For weapons you go to the blacksmith and for armor, gloves, and boots you go to the tailor.

To enchant an item you need an enchanting material and a few coins the available materials are as follows:

Tin- gives 3% enchant
Dark Steel- gives 6% enchant  
Black Steel- gives 9% enchant
Steel of Eternity- gives 12% enchant
Gold of Eternity- gives 15% enchant

If the enchant is succesful it will add that much percent to your item.

Luck effects your chance of success (100 luck gives 1% better chance of success) so Garuda's Song is very useful when enchanting.
If your luck is not very high I suggest asking a fellow guild member, GS or trusted friend with high luck to enchant for you.


Every time you enchant an item, there's a chance for failure, which is determined by the following formula:

Enchant Success Rate (%): {103 - ( Previous Enchant Percentage + Current Enchant Percentage )} + [1 per 100 luck]

This rate is capped at 100% and there is a minimum 5% chance of failure.

When the enchantment fails, there is a chance of item breaking, which is determined by this other formula:

Item Destruction Rate (%) = {(Previous Enchat Percentage + Current Enchant Percentage)} - 57 - [1 per 100 luck]

When the sum of PUP+CUP is >57, there is a minimum 1% break rate.


Upgrading
Upgrading an item will take your current rare item up 10 levels. For example a level 45 weapon to a level 55 weapon.
To stop the confusion this will change the item into the item of that level, not just raise its level. Your item must have atleast 12% enchantment on it to attempt upgrading the item.

Beware though. When upgrading an item you can lose enchantment and combine stages. The enchantment lost is based on the enchantment you have when upgrading, the higher your items enchantment, the more you can lose (3% loss is most common). You can also lose half of your current combine stages (If an odd number you round up).Each time you fail an upgrade your jade will be used and your money spent will be lost, however your item has no chance at breaking from a failed upgrade. Successful upgrades randomly change the skill on your item, so you might not always get the skill you want; however, master level upgrades do not change the skill.

In order to upgrade you must have a Red Jade or Purple Jade but Purple Jade has 2% less chance of success (You can trade 2 Purple Jades for a Red Jade at Herb Master). You must also have 100+ Contribution Points (the number by your level on the Character screen). You must then go to the Elder of your faction and click entrance. Once you enter the area head to the lord of your element (Fujins-Shadow, Jinongs-Dark,Guanyins-Light) and select upgrade. Then drag your item you want to upgrade into the box labeled Item and the Red Jade into the box labeled Material and click OK.

Each upgrade costs coins to do; prices are as follows:

Level 45-55 is 100k
Level 55-65 is 200k
Level 65-75 is 300k
Level 75-85 is 400k
Level 85-95 is 500k
Level 95-105 is 600k
Level 105-M2 is 700k
M2-M5 is 800k
M5-M8 is 900k
M8-M11 is 1mil
This pattern continues all the way up to M33.

Again luck effects the chance of a successful upgrade so Garuda's Song is recommended.
If you do not have very high luck ask a guild member, GS, or trusted friend with high luck to upgrade for you,
also if you do not have 100 Contribution points, I'm sure there is someone you can trust that does.