Moto G7 Power X1955-2 won't boot

When my phone wouldn't boot after having my phone shut off from low battery, so I used Lenovo's Rescue and Smart Assistant, which immediately recognized my phone and proceeded with the repair with the version it chose for me. I booted the phone and was using it fine all day. Android asked to apply a system update and I did so, and continued to use the phone for a while. When I restarted the phone, I am presented with the error in fastboot:

`SSM: Android image roll back: 12, 13` `failed to validate boot image` `failed to pass validation, backup to fastboot`

I figured I'd go back to the Rescue and Smart Assistant, but it is now telling me I have an unsupported device, whether I try to automatically detect the phone or enter the X1955-2.

What can I try next? Some very old but seemingly related threads seems to suggest installing the stock ROM via fastboot, is this the correct version? It was the latest one I could find on the frequently linked 'lolinet'

`OCEAN_RETAIL_9.0_PPOS29.114-134-13_cid50_subsidy-DEFAULT_regulatory-DEFAULT_CFC`

I have attached getvar all below. I'm not a phone flashing expert I only perennially figure these things out when I run into problems, this is kind of beyond me and it's my only phone.

(bootloader) version: 0.5 (bootloader) version-bootloader: MBM-2.1-ocean_retail-0a6142d67e0-200508 (bootloader) product: ocean (bootloader) board: ocean (bootloader) secure: yes (bootloader) hwrev: PVT1 (bootloader) radio: 3 (bootloader) storage-type: emmc (bootloader) emmc: 64GB MICRON S0J9N8 RV=08 PV=10 FV=0000000000000004 (bootloader) ram: 4GB MICRON LP3 DIE=8Gb M5=FF M6=01 M7=00 M8=5F (bootloader) cpu: SDM632 (bootloader) serialno: ZY323TZHD9 (bootloader) cid: 0x0032 (bootloader) channelid: 0x1b (bootloader) uid: CC606A9F00000000000000000000 (bootloader) securestate: oem_locked (bootloader) factory-modes: disabled (bootloader) iswarrantyvoid: no (bootloader) max-download-size: 536870912 (bootloader) reason: Volume down key pressed (bootloader) imei: ** (bootloader) imei2: (bootloader) meid: (bootloader) date: 04-11-2019 (bootloader) sku: XT1955-2 (bootloader) carrier_sku: XT1955-2 (bootloader) battid: SB18C28957 (bootloader) iccid: (bootloader) cust_md5: (bootloader) max-sparse-size: 268435456 (bootloader) current-time: "Fri Jun 26 7:31:58 UTC 2020" (bootloader) ro.build.fingerprint[0]: motorola/ocean/ocean:10/QPOS30.52- (bootloader) ro.build.fingerprint[1]: 29-2/397fb:user/release-keys (bootloader) poweroffalarm: 0 (bootloader) ro.build.version.full: <not found> (bootloader) ro.build.version.qcom: LA.UM.8.6.2.r1-06600-89xx.0 (bootloader) version-baseband: M632_41.178.01.156R OCEAN_LATAMDSDS_CUST (bootloader) kernel.version[0]: Linux version 4.9.206-perf+ (nobody@andr (bootloader) kernel.version[1]: oid-build) (clang version 8.0.12 for And (bootloader) kernel.version[2]: roid NDK) #1 SMP PREEMPT Sun May 24 10:3 (bootloader) kernel.version[3]: 3:41 CDT 2020 (bootloader) sbl1.git: MBM-2.1-ocean_retail-315bc626c6-200508 (bootloader) rpm.git: MBM-2.1-ocean_retail-20f2cf34-200508 (bootloader) tz.git: MBM-2.1-ocean_retail-03d85fce32-200508 (bootloader) devcfg.git: MBM-2.1-ocean_retail-03d85fce32-200508 (bootloader) keymaster.git: MBM-2.1-ocean_retail-03d85fce32-200508 (bootloader) cmnlib.git: MBM-2.1-ocean_retail-03d85fce32-200508 (bootloader) cmnlib64.git: MBM-2.1-ocean_retail-03d85fce32-200508 (bootloader) prov.git: MBM-2.1-ocean_retail-03d85fce32-200508 (bootloader) aboot.git: MBM-2.1-ocean_retail-0a6142d67e0-200508 (bootloader) frp-state: protected (77) (bootloader) ro.carrier: retla (bootloader) current-slot: a (bootloader) running-boot-lun: 0 (bootloader) running-slot: _a (bootloader) slot-suffixes: _a,_b (bootloader) slot-count: 2 (bootloader) slot-successful:_a: No (bootloader) slot-successful:_b: No (bootloader) slot-bootable:_a: Yes (bootloader) slot-bootable:_b: No (bootloader) slot-retry-count:_a: 0 (bootloader) slot-retry-count:_b: 0 (bootloader) pcb-part-no: SP69A6P0ME all: listed above finished. total time: 0.021s

Edit: Before I used the SRA the first time, it was entirely stock system, purchased as an "international version" on Amazon. I have not unlocked anything or installed a custom recovery or anything like that. If the answer is in fact to flash the firmware with that version, what exactly do I do to do that?