The HTC One X Android 4.1, JellyBean update began rolling out in Taiwan this week.
HTC's headquarters is located in Taiwan and this is the reasoning behind it being one of the first countries to receive the upgrade.
The JellyBean update will roll out in most of North Asia within the next few days, according to Jack Ton, the general manager of HTC North Asia.
The HTC One S JellyBean updates will be available at a later date.
The One S special white edition appeared on the company's Taiwanese website earlier this month.
This variant comes with a white body similar to the one found on the HTC One X and features 64GB of built-in memory.
The rest of the specifications are all the same as the original HTC One S.
In other HTC news, it has been confirmed that the One X+ will be released through AT&T in the United States.
The carrier announced the device earlier this month and also confirmed that it will launch two other HTC smartphones: the HTC One VX and HTC Windows Phone 8X.
The HTC One X+ comes equipped with a 1.7GHz quad-core Tegra 3 processor, 2,100mAh battery with six hours more talk time, 64GB of storage, and Android 4.1, JellyBean with HTC's custom Sense 4+.
HTC stated that this new version of the One X is 67 percent faster than the original with LTE. It will also only come in black, eliminating the white and charcoal gray colors that the One X came in.
The HTC One VX features lower end specs such as a 4.5-inch display, and a 5-megapixel rear camera. It also runs Android 4.0, Ice Cream Sandwich.
The HTC Windows Phone 8X will be one of the first Windows 8 devices to be released and should launch sometime next month. The handset features a 1.5GHz dual-core processor, 16GB of internal storage, an 8-megapixel camera, and a 4.5-inch display.
The prices and exact release dates for these handsets were not announced, but all three should arrive before 2013.