[Lenovo Legion Duel Guides, News, & Discussion] Zero11534:
Please read and DO AT YOUR OWN RISK

After searching everywhere and trying to get a clear answer on the Global ROM_ROW support for Android 11 on the Lenovo Legion Duel (one), all I could find was don't use the Chinese ROM as it has many issues. So, like any person told not to I tried it. Though it worked I had multiple issues with sensors and my cell service in the USA. I went back to GLOBAL ROM .332 which was the most stable for me but did lose my casting ability for playing my games to my TV. This is a deal breaker for me as I take my phone on the go and hook to friends and family's TV's for Steam, Emulation, etc and we use the casting, as this allows me to play my games. Note I also use it for Gamepass cast to the screen for friends to watch the game etc.

I finally found an Android 11 non China ROM, but it was an EE ROM on another site (which I had to pay for) but NO Global ROW ROM as installed on the phone when I purchased it. After backing up my data yet again, I tried to install this one (see link below for how to install). Once I installed and rebooted the Lenovo Legion L79031 v EE 12.5.251_ST rom, and set my cell APN, Turned the 5G to NSA-SA and networks preference (to NR-LTE-GDSM etc...) it began to function. After prox. 30 seconds after a reboot from changing the settings, I got a notification for an update (YES OTA). The update is for 12.5.320 which has notification fixes and bug fixes. Hopefully, this will be my last time having to flash the device! But I can confirm the EE rom for 11 does function on T-Mobile in the USA and works with out issue so far, has only been a short time for usage, but finally a solution for me.

Pros:

Android 11

Battery life improved

Smoother touch rate

OTA UPDATES

(Everything seems to function including cell and text messages on USA T-Mobile including the 5G NR)

Cameras work for everything even BARCODE readers and Mobile banking depo which was an issue before (at least for me). Pic snap faster but no real software updates from last build for controls as far as I can tell.

ZUI loads much faster.

Cons:

Lost all settings backups seems to cause issue when restoring so manually re-adding is the best solution.

APN setting and other settings might need to be redone, if installing from a back up or updating with OTA update.

Rebooting seems to take longer.

View attachment 5355159

As for what everyone really wants the links and how to install, I have linked to a video I send to others to use for installing the ROM, it is NOT my video, but the best one on YOUTUBE( I found recently); I had my 8 year old son help me a few weeks ago update a friends Duel and I let my son follow the vid and install the rom, OBV I did the downloads on the PC and setup the file location but he was able to follow the steps well to load the files to the phone, which is why I suggest to us it. The first time installing is scary! There is BIG BIG BIG pre-req beforehand, back up your phones drives as mentioned in other post on this forum! I have had to use mine two or three times and with out it I would have been SOL! See links below for ROM and VID.

I do not take any responsibility if you brick your device or LOOSE your data, etc or if this doesn’t work on another US carrier, as I have only tested AT&T (friends’ phone) and T-Mobile (MINE). I will try to help if it’s messed up, but please back your stuff up!

(Not my video, but how to install)

ROM- EE version (I believe this to be UK ROM) (Again I PAID FOR THIS, but I am sharing it for FREE, as we should all have access to these OTA).

https://drive.google.com/file/d/12pcwgyWnrw_RfTZRfc78fHZ9VefS5VQL/view?usp=sharing

Lolinet is hosting the files now as well (free)

lolinet mirrors - firmware, software, iso etc.

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mirrors.lolinet.com