OnePlus5 - HELP! - TWRP Recovery: Invalid Zip File Format

[SkyZFr]

Hi!
I'm trying to install an update of OxygenOS. I wanted to install this with a .zip folder via my TWRP custom recovery (TWRP 3.2.3-0). However, I'm still having an issue with every ROM that I'm trying to install: "Invalid zip file format!", following by: " Error installing zip file 'OxygenOS.zip' ".
I precise that I have this issue with every .zip ROM that I'm trying to install...
I actually don't have any ROM installed on my OP5, so I can't boot right now.
I'm only fighting with my TWRP recovery and my Bootloader !
The Android version I had before that was Android 7.1.1( old boy...)

I'd be pleased if someone could help me solving this issue...
Have a nice day & Thx !

 

[strongst]

Hi!
I'm trying to install an update of OxygenOS. I wanted to install this with a .zip folder via my TWRP custom recovery (TWRP 3.2.3-0). However, I'm still having an issue with every ROM that I'm trying to install: "Invalid zip file format!", following by: " Error installing zip file 'OxygenOS.zip' ".
I precise that I have this issue with every .zip ROM that I'm trying to install...
I actually don't have any ROM installed on my OP5, so I can't boot right now.
I'm only fighting with my TWRP recovery and my Bootloader !
The Android version I had before that was Android 7.1.1( old boy...)

I'd be pleased if someone could help me solving this issue...
Have a nice day & Thx !

Hello, you need to clean flash 5.1.4, then ota update to 9.0.9 and then flash twrp from PC again with root.
See here https://forum.xda-developers.com/on...xygenos-4-5-2-7-1-1-ota-t3627003/post72799040 including last pages where it's been explained a lot

 

[SkyZFr]

Hello, you need to clean flash 5.1.4, then ota update to 9.0.9 and then flash twrp from PC again with root.
See here https://forum.xda-developers.com/on...xygenos-4-5-2-7-1-1-ota-t3627003/post72799040 including last pages where it's been explained a lot

what do you mean by " clean flash 5.1.4 " ? Android 5.1.4 ? or Oxygen ?

thx

 

[strongst]

what do you mean by " clean flash 5.1.4 " ? Android 5.1.4 ? or Oxygen ?

thx

I mean OxygenOS 5.1.4

 

[SkyZFr]

I mean OxygenOS 5.1.4

I tried so much, but actually I really can't flash nothing...
I'm now having : "Updater process ended with ERROR: 4"
I also had ERRO 7 from TWRP, but I tried everything, like changing a part of the code of one script of the ROM, but nothing is working.