The Libretro Team
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MAME libretro core updated to version 0.203!
🕑 Added 2018-11-06 08:41:51 +0000 UTC The MAME libretro core has been updated to the latest version (0.203)! You can grab this latest MAME core from our buildbot.Here is a quick demonstration of how you would update/download MAME directly from within RetroArch -
1. Inside the Main Menu, go to Online Updater.

2. Select 'Core Updater'.

3. Select 'Arcade (MAME)' and press the OK button. Now wait until the download has finished. In the meantime, you can still use the menu to make the wait less boring. After it has finished extracting, the core has successfully been installed onto your system.

Comments
The Libretro Team
This would deplete all our bandwidth, and we already push 30TB a week and have to pay $300+ server fees per month!
Mored4u
New feature, try to let RetroArch update all cores with single click like "Update all core" or "update all exist core"