Download- Byhss Ly Tyz Mhjbt Msryt Fy Alatwbys... Guide

Given the lack of clear solution in 1 minute, a likely intended completion could be:

Let’s test Atbash on “byhss”: b (2nd letter) ↔ y (25th) y (25th) ↔ b (2nd) h (8th) ↔ s (19th) s (19th) ↔ h (8th) s (19th) ↔ h (8th) Result: “ybshh” — not a word. Download- byhss ly tyz mhjbt msryt fy alatwbys...

Shift each letter backward by 1: b→a, y→x, h→g, s→r, s→r → “axgrr” no. Shift backward by 3: b→y, y→v, h→e, s→p, s→p → “yvepp” no. Given the lack of clear solution in 1

Let’s instead guess the plaintext language is Arabic in Latin script, cipher is ROT1 (A→B). Then to decode, shift back 1: shift back 1: