Ne znam da li si obratio pažnju na ovaj komentar ispod klipa:
Remember this before start: you should have firmware 11.0.A.4.27 installed before proceed.
If you are 11.0.A.0.16 or 11.0.A.4.22 when applying rom lollipop, it won´t work.
You can update your current compilation (16 or 22) after download indian 4.27 stock from xperifirm and creating the corresponding ftf in flashtool, after that, you should flash ftf 4.27 compilation file over your current firmware, and finally you can apply rom lollipop over the 4.27 firmware.
This applies for xperia tipo st21a and st21i for just one single sim card
Also keep in mind that this is not a real 5.0 upgrade. It looks like 5.0 with material design, but is really Android 4.0.4. Dont be disappointed. Its a good effort in order to feel Android 5.0 on your xperia tipo.
I obrati pažnju na boldovane rečenice.
Nije za dual sim telefon. Jel imaš dual sim ili single sim verziju? Jel ti telefon st21a ili st21i?
I ovo nije Lollipop, ovo je Ice Cream Sandwich, samo je modifikovan da izgleda ko Lollipop.