How can i find the sleeveless jacket in GTA:The lost and damned?

Try Google or eBay

Vintage Cheat List

These cheats from GTA IV's main story are also effective in the downloadable content. Take out your phone by tapping Up on the D-pad twice, then enter the number below for the desired effect:

267-555-0150 - Raise wanted level
267-555-0100 - Lower wanted level
362-555-0100 - Replenish armor
482-555-0100 - Replenish health, armor, and ammo
468-555-0100 - Alter weather
486-555-0100 - Weapon pack 1
486-555-0150 - Weapon pack 2
948-555-0100 - Song information
359-555-0100 - Spawn an Annihiliator...


Spawn Vehicles (Lost and the Damned)

Take out your phone by tapping Up on the D-pad twice, then enter the number below for the desired vehicle:

826-555-0150 - Burrito
245-555-0125 - Double T
245-555-0199 - Hakuchou
245-555-0150 - Hexer
245-555-0100 - Innovation
826-555-0100 - Slamvan
359-555-0100 - Annihilator
227-555-0100 - FIB Buffalo

Unlockables
Weapons from Jim (Lost and the Damned)

At the clubhouse you can call Jim to deliver certain weapons. Perform the actions below to unlock the respective weapon:

Beat the "Bad Cop Drop" mission - Automatic Pistol
Beat the "Hit The Pipe" mission - Pipe Bombs

More Vehicles (Lost and the Damned)

Perform the actions below to unlock additional vehicles:

Innovation - Kill all 50 Seagulls
Bati 800 - Complete all of Angus' bike theft missions

No Ammo Limit (Lost and the Damned)

Get 100% completion to remove ammo limits in the game.
Hokachu Bike (Lost and the Damned)

Beat 12 races in single-player to unlock the bike. Clay will transport it for you.
Gang War Rewards (Lost and the Damned)

Meet the following requirements to unlock the weapons below for the safehouse:

Beat 10 Gang Wars - Sawed-off Shotgun
Beat 20 Gang Wars - Automatic Pistol
Beat 30 Gang Wars - Carbine Rifle
Beat 40 Gang Wars - Assault Rifle
Beat 50 Gang Wars - Grenade Launcher


Extra Parking (Lost and the Damned)

The yellow parking spaces in front of safe houses you've acquired in the main story will carry over into the Lost and Damned content. Use these to save and repair vehicles.

Contact Rockstar and ask your problem.

what u need to do is go to Rockstar north forums and post there. maybe they will give u a new key i am not sure. or there maybe a software out there that can tell you what the key is.. so first post there forums and wait if u don't want to wait then just look for this GTA IV key viewer

i hope this helps you.

It is simple just update your game with razor 1911 patch for gta 4.
It will automatically activate your game.