Here is vos 1.0 android 8.1 fastboot : https://mega.nz/file/HpNiUAzZ#Gnq_28s2P-op_I-nV2bXHwj0YM3z92TDu1M560z7Auw
Hi,i got full OTA link of April patch for PQ4002. Here for you : https://android.googleapis.com/pack.../e52e3261f3551e554622b4c1c7aae3d055956b07.zip
My friend firstly how can i install rom? For example fastboot zip or full ota.Which one firstly? Can u help me?
9 is full ota zip, you can sideload from older version 8.1 is fastboot you need unlocked bootloader to downgrade
For 9, you have 2 option: sideload via pc or apply update from Sdcard in recovery mode Can you send me screenshot of About phone ?