[Moto G7 Power Questions & Answers] flash713:
[MENTION=493853]rea[/MENTION]1|1

I'll tell you what I do when I've been in the exact same situation as you're in now. Now just know that when I fastboot my RETUS factory image I always format data partition just before installing an aosp rom and while I'm on slot_a after I format data I always install the copy-partitions-AB.zip so that I don't brick, again. That being said if you've installed the copy partitions AB zip while on slot_a and it installed without errors in your recovery screen then I've had luck manually booting into bootloader mode then plug in my USB to laptop and open terminal and switch to the other slot and reboot system and if that doesn't boot I've had some successes manually getting bootloader mode back up then in terminal wiping data with fastboot erase userdata and sometimes I hit my arrow going up key on my laptop keyboard and repeat it again just because I'm crazy then reboot system. I've booted a few times when I was in purgatory like you explain in your post here. Haha. Other times I've came out of fastboot loop by getting to bootloader mode then booting orange fox recovery and hit reboot and whatever slot I'm currently on I press the other opposite letter A or B then format data partition and wipe data in recovery and reboot system. That's all through just trying various methods of pulling up outa purgatory. ? Just know that if you attempted what I say here and you have not installed the copy-partitions-ab.zip successfully while on slot_a there's a chance you may hard brick your device so careful. All else fails and it's still not booted up flash factory image for your device. That's how I do mine and I have about flashed my device to death for real. I'm staying put now because i believe my Power just might bite it soon because of how it's been acting and the signs I've been noticing.. Totally getting the 4gb ram unlocked model if this one dies. Fingers crossed. I'm proof that the copy partitions AB zip works ? ! I probably have about 300-400 rom flashes in since I hard bricked 3-4 months ago I believe it was last time. That copy zip when installed with no errors saves the day for sure!

Ps: When I mentioned switching to opposite slot and formatting data and wiping data in orange fox recovery then rebooting system when I booted successfully that way I was installing a GSI system.img Bliss 12.6 actually BADDD ASSS rom btw!! And I had installed system image to slot a and slot b previously. Hell one time I couldn't get Havoc 3.4 to boot regardless of what I did and I had a zip for superior os rom on my thumb drive so I said wth and swiped to install the rom then changed my mind so while my phone was in the process of installing Superior I manually booted to bootloader wiped data, system and cache flashed Havoc , rebooted bootloader formatted data, and wiped data in recovery after installing NikGapps and it wouldn't boot so I went back in bootloader and wiped data using fastboot erase userdata and it booted up. ? The way I see it I'll try anything as long as i know I'm safe and that copy zip makes that happen.

Edit added below May 2

**Also I have found it's better to just do the: fastboot boot recovery.img when I need it. But if you want to install TWRP definitely use Electimon's unofficial build. You can boot the twrp.img then flash the installer zip while in recovery but many roms come with custom recovery installed already. And just because it's official doesn't necessarily mean it's better than something that's unofficial. The official TWRP has issues or it did where it would freeze and touch screen would become non operational and Electimon's unofficial TWRP very seldom ever does that, if at all. If and when it does happen to get around it just keep manually booting bootloader then try again until it stops and you can select buttons on the recovery screen.