I managed to get Uncharted to work by switching Loading to option No. 3 on MAI Dump tool for the particular game:
2. Extract PCSA00029.7z file. You will get PCSA00029 data folder.
3. Extract PCSA00029_patch.7z file. You will get PCSA00029_patch data folder.
4. Copy folders to your PS Vita memory card.
5. Move both PCSA00029 and PCSA00029_patch data folders to ux0:/mai/ folder.
6. Open MaiDumpTool V233.2zEx and install game with option 2.
7. Open MaiDumpTool V233.2zEx and install patch with option 3.
8. AND SWITCH GAME LOADING TO "3. Only load libfios2_m and libc_m (p.support)" with option 5.
9. Game should be fully installed. Enjoy.
2. Extract PCSA00029.7z file. You will get PCSA00029 data folder.
3. Extract PCSA00029_patch.7z file. You will get PCSA00029_patch data folder.
4. Copy folders to your PS Vita memory card.
5. Move both PCSA00029 and PCSA00029_patch data folders to ux0:/mai/ folder.
6. Open MaiDumpTool V233.2zEx and install game with option 2.
7. Open MaiDumpTool V233.2zEx and install patch with option 3.
8. AND SWITCH GAME LOADING TO "3. Only load libfios2_m and libc_m (p.support)" with option 5.
9. Game should be fully installed. Enjoy.