Skyrim for Android 0.27.3

APK: Skyrim-0.27.3.apk (arm64-v8a, Android 9+, Vulkan 1.1).
SHA-1 f43d5c418d40a4fc169f4c6f8b759682ff656e99

Fixes

Aspect ratio setting restored. The picture was stretched to fill the whole screen whatever aspect you chose. The output now always matches the screen. "Draw UI at native resolution" now letterboxes the same way, with the menus drawn sharp inside the same area.
SD cards and USB drives now show in the file browser. The Storage list asks Android directly for every mounted storage volume, so removable cards and drives appear as "SD / USB: name/" next to Internal storage. The list refreshes every couple of seconds, so a card you insert while the browser is open shows up.
Your own SkyrimPrefs.ini edits are kept. The launcher now edits the file in place, leaving every other line, comment and the line order alone, and only writes a setting when you changed that option in the launcher, the setting is missing from the file, or you picked a different quality preset (the preset's own file is applied in full then, as before).
Swipe-look is even on both axes. Vertical swipes are now scaled by the screen's shape (short edge ÷ long edge), so swiping the same share of the screen turns the same amount either way. The vertical-ratio and invert-Y settings still apply on top of this.

Disable shadows, under Depth of field. It sets fShadowDistance=0.0000, fInteriorShadowDistance=0.0000 and iShadowMapResolution=0 in SkyrimPrefs.ini. Untick it and the shadow distances and resolution go back to your preset's values.

Please attach port/log.txt from your Skyrim folder to any bug report.