[Upgrading, Modifying and Unlocking] janvantonder:
Good Morning!

$ fastboot getvar all

(bootloader) kernel: uefi

(bootloader) version-bootloader: MBM-3.0-payton_retail-8510c11-190829

(bootloader) product: payton

(bootloader) board: payton

(bootloader) secure: yes

(bootloader) hwrev: P4

(bootloader) radio: EMEA

(bootloader) storage-type: eMMC

(bootloader) emmc: 64GB SAMSUNG DH6DMB RV=08 PV=05 FV=0000000000000005

(bootloader) ufs: N/A

(bootloader) ram: 4GB SAMSUNG LP4x DIE=16Gb M5=01 M6=06 M7=10 M8=12

(bootloader) cpu: SDM630 1.0 (6)

(bootloader) serialno: ZY224KGFPP

(bootloader) cid: 0x0032

(bootloader) channelid: 0x40

(bootloader) uid: 31E01D35

(bootloader) securestate: flashing_unlocked

(bootloader) verity-state: disabled (0)

(bootloader) iswarrantyvoid: yes

(bootloader) max-download-size: 536870912

(bootloader) reason: Volume down key pressed

(bootloader) imei: 356516081212750

(bootloader) meid:

(bootloader) date: 10-21-2017

(bootloader) sku: XT1900-7

(bootloader) carrier_sku:

(bootloader) battid: SNN5995A

(bootloader) battery-voltage: 4144

(bootloader) iccid:

(bootloader) cust_md5:

(bootloader) max-sparse-size: 268435456

(bootloader) ro.build.fingerprint[0]: motorola/payton/payton:9/PPWS29.69

(bootloader) ro.build.fingerprint[1]: -37-5/63ca8:user/release-keys

(bootloader) poweroffalarm: 0

(bootloader) ro.build.version.full[0]: Blur_Version.29.381.29.payton.ret

(bootloader) ro.build.version.full[1]: ail.en.US

(bootloader) ro.build.version.qcom: LA.UM.7.2.r1-04900-sdm660.0

(bootloader) version-baseband: <not found>

(bootloader) kernel.version[0]: Linux version 4.4.153-perf-g3ff98f3 (hud

(bootloader) kernel.version[1]: soncm@ilclbld153) (gcc version 4.9.x 201

(bootloader) kernel.version[2]: 50123 (prerelease) (GCC) ) #1 SMP PREEMP

(bootloader) kernel.version[3]: T Thu Aug 29 11:07:24 CDT 2019

(bootloader) git:abl: MBM-3.0-payton_retail-8510c11-190829

(bootloader) git:xbl: MBM-3.0-payton_retail-fe5d8a9-190829

(bootloader) git:pmic: MBM-3.0-payton_retail-fe5d8a9-190829

(bootloader) git:rpm: MBM-3.0-payton_retail-b0c6622-190829

(bootloader) git:tz: MBM-3.0-payton_retail-3ea0392-190829

(bootloader) git:hyp: MBM-3.0-payton_retail-3ea0392-190829

(bootloader) git:devcfg: MBM-3.0-payton_retail-3ea0392-190829

(bootloader) git:cmnlib: MBM-3.0-payton_retail-3ea0392-190829

(bootloader) git:cmnlib64: MBM-3.0-payton_retail-3ea0392-190829

(bootloader) git:keymaster: MBM-3.0-payton_retail-3ea0392-190829

(bootloader) git:prov: MBM-3.0-payton_retail-3ea0392-190829

(bootloader) git:storsec: MBM-3.0-payton_retail-3ea0392-190829

(bootloader) frp-state: no protection (0)

(bootloader) ro.carrier: reteu

(bootloader) current-slot: a

(bootloader) running-bl-slot: _a/_a

(bootloader) running-boot-lun: 0

(bootloader) slot-count: 2

(bootloader) slot-successful:_a: no

(bootloader) slot-successful:_b: no

(bootloader) slot-unbootable:_a: no

(bootloader) slot-unbootable:_b: no

(bootloader) slot-retry-count:_a: 2

(bootloader) slot-retry-count:_b: 0

all: listed above

finished. total time: 0.046s

The problem is that I should have updated to Oreo before installing the custom ROM. I've tried flashing 11 different stock ROMs from Lolinet but the best result I got was from:

XT1900-7_PAYTON_RETEU_DS_9.0_PPWS29.69-37-5_subsidy-DEFAULT_regulatory-DEFAULT_CFC.xml

After flashing this the phone shows a baseband version, however WLAN still does not work.

My guess is that my best hope is to flash stock Android 7.1.1 for the XT1900-7, however I cannot find such a ROM version anywhere.

So if anyone can help....

The ROM I'm looking for is probably in here somewhere:

http://download.lenovo.com/lsa/Rescue/Smartphone/IBIS%20XT1900/????

Unfortunately it's not possible to list the contents of this directory.