So you flashed stock android 10, then upgraded to stock 11 before flashing a custom rom, i.e. stock 10 >> stock 11 >> custom rom?
Also, can you run fastboot getvar all and post its output?
I had to flash stock android 10 because I messed my phone up trying to install a custom ROM on the original out-of-the-box android. Many times after that I was trying to install custom ROM on the stock android 10 that I flashed. It kept failing to install system.img, things kept going wrong, and I kept reflashing android 10. Only recently did I think to try flashing a more updated version, but that didn't work either. I'm going to have another go now. This has taken up a lot of my weekends recently
This is the "fastboot getvar all" from the flashed android 10. (On the android 11 ROM the version-bootloader is: MBM-3.0-sofiar_reteu-d09f15b89f-210331)
(bootloader) kernel: uefi
(bootloader) version-bootloader: MBM-3.0-sofiar_reteu-e711989-191226
(bootloader) product: sofiar
(bootloader) board: sofiar
(bootloader) secure: yes
(bootloader) hwrev: PVT
(bootloader) radio: ROW
(bootloader) storage-type: eMMC
(bootloader) emmc: 64GB MICRON S0J9K8 RV=08 PV=10 FV=0000000000000004
(bootloader) ufs: N/A
(bootloader) ram: 4GB MICRON LP4 DIE=16Gb M5-M8=FF 04 10 10
(bootloader) cpu: SM_NICOBAR 1.0
(bootloader) cid: 0x0032
(bootloader) channelid: 0x00
(bootloader) securestate: flashing_unlocked
(bootloader) factory-modes: disabled
(bootloader) verity-state: enforcing (0)
(bootloader) iswarrantyvoid: yes
(bootloader) max-download-size: 805261312
(bootloader) reason: Reboot mode set to fastboot
(bootloader) meid:
(bootloader) date: 08-16-2020
(bootloader) sku: XT2041-3
(bootloader) carrier_sku: XT2041-3
(bootloader) battery-voltage: 4215
(bootloader) iccid:
(bootloader) cust_md5:
(bootloader) max-sparse-size: 268435456
(bootloader) ro.build.fingerprint[0]: motorola/sofiar_reteu/sofiar:10/QP
(bootloader) ro.build.fingerprint[1]: E30.79-25/59f4f:user/release-keys
(bootloader) poweroffalarm: 0
(bootloader) ro.build.version.full: <not found>
(bootloader) ro.build.version.qcom: LA.UM.8.11.r1-01800-NICOBAR.0
(bootloader) version-baseband: M6125_03.05.03.09R SOFIA_ROWDSDS_CUST
(bootloader) kernel.version[0]: Linux version 4.14.117-perf+ (nobody@and
(bootloader) kernel.version[1]: roid-build) (clang version 8.0.12 for An
(bootloader) kernel.version[2]: droid NDK) #1 SMP PREEMPT Thu Dec 26 07:
(bootloader) kernel.version[3]: 47:50 CST 2019
(bootloader) git:xbl: MBM-3.0-sofiar_reteu-4d9fbfd-191226
(bootloader) git:xbl_config: MBM-3.0-sofiar_reteu-4d9fbfd-191226
(bootloader) git:rpm: MBM-3.0-sofiar_reteu-ffcccb0-191226
(bootloader) git:tz: MBM-3.0-sofiar_reteu-8ef3dba-191226
(bootloader) git:hyp: MBM-3.0-sofiar_reteu-8ef3dba-191226
(bootloader) git:devcfg: MBM-3.0-sofiar_reteu-8ef3dba-191226
(bootloader) git:cmnlib: MBM-3.0-sofiar_reteu-8ef3dba-191226
(bootloader) git:cmnlib64: MBM-3.0-sofiar_reteu-8ef3dba-191226
(bootloader) git:keymaster: MBM-3.0-sofiar_reteu-8ef3dba-191226
(bootloader) git
rov: MBM-3.0-sofiar_reteu-8ef3dba-191226
(bootloader) git:abl: MBM-3.0-sofiar_reteu-e711989-191226
(bootloader) git:qupfw: MBM-3.0-sofiar_reteu-f848623-191226
(bootloader) git:uefisecapp: MBM-3.0-sofiar_reteu-8ef3dba-191226
(bootloader) frp-state: no protection (0)
(bootloader) ro.carrier: retgb
(bootloader) current-slot: a
(bootloader) running-bl-slot: _a/_a
(bootloader) running-boot-lun: 0
(bootloader) slot-count: 2
(bootloader) slot-successful:_a: yes
(bootloader) slot-successful:_b: no
(bootloader) slot-unbootable:_a: no
(bootloader) slot-unbootable:_b: no
(bootloader) slot-retry-count:_a: 6
(bootloader) slot-retry-count:_b: 0
(bootloader) logical-block-size: 0x200
(bootloader) erase-block-size: 0x200
(bootloader) is-userspace: no
all: listed above
finished. total time: 0.064s