The official TWRP site only keeps the latest 2–3 versions per device. For 3.5.2, you may need to use a mirror like https://androidfilehost.com – but only use links posted by trusted TWRP maintainers.
was officially released on April 7, 2021 , primarily to fix a regression error related to digest checking. This version is widely used for older Android devices, particularly those running Android 9.0 or 10. Downloading TWRP 3.5.2 twrp 3520 download top