Lenovo A1010a20 A Plus (Carrefour)

Muchas gracias, funciona finalmente!
Tenia la misma problema "Parece que ha ido todo bién, pero de momento no he conseguido entrar aun en el TWRP, me sale el recovery standar(?).", y encontrado el paso 6 a debajo (lo siento, es en ingles):

1. Install adb-driver: Tutorial: Manually installing Android ADB USB Driver
2. Root guide: Lenovo A1010a20 A Plus (Carrefour)
3. Unblock boot-loader, make sure correct adb-driver (step 1) in Device Manager: Run "Desbloquear bootloader"
4. Restart the phone and will return to factory reset. Enable USB-debugging again.
5. Put update SU-zip file on external memory card for rooting later (consider using magisk manager for su)
6. Proper TWRP-image to replace in /img-folder of "Autoinstalador_TWRP_LeagooM5_Plus": http://lenovo-forums.ru/applications/core/interface/file/attachment.php?id=65441
7. Remove battery for 10 sec, then enter recovery mode (volume+ & power on), should enter TWRP.
8.1 If you want to use apps like pokemon go, please consider magisk manager as method for su instead of supersu ()
8.2 Othewise install SU-update Root from SD-card and clear dalvik/cache and restart.
9. Verify with Root checker that phone is rooted.
10. If you want to be able to move apps to SDAdd extented primary ext4 partition on sd-card using MiniTool Partition (Move/Resize partition, create partition, Ext SD card, primary, etx4) - 11. Install file2sd plus to be able to move files to sd-card.