[Android Q&A, Help & Troubleshooting] trollcraft1002:
Hello i tried some firmwares but every one gives me

D:\Minimal ADB and Fastboot>fastboot flash partition gpt.bin

target reported max download size of 245366784 bytes

sending 'partition' (45 KB)...

OKAY [ 0.005s]

writing 'partition'...

(bootloader) Validating 'gpt.default.xml'

(bootloader) Security version downgrade

(bootloader) Image primary_gpt failed validation

(bootloader) Preflash validation failed

(bootloader) Cancelling 'gpt.default.xml'

FAILED (remote failure)

finished. total time: 0.076s

idk what to do

here's getvar all

(bootloader) version: 0.5

(bootloader) version-bootloader: moto-msm8917-BE.4F

(bootloader) product: pettyl

(bootloader) board: pettyl

(bootloader) secure: yes

(bootloader) hwrev: P3

(bootloader) radio: 7

(bootloader) storage-type: emmc

(bootloader) emmc: 16GB SAMSUNG FE62MB RV=08 PV=03 FV=0000000000000003

(bootloader) ram: 1GB SAMSUNG LP3 DIE=8Gb M5=01 M6=06 M7=00 M8=1F

(bootloader) cpu: MSM8917

(bootloader) serialno: ZY3233BWBT

(bootloader) cid: 0x0032

(bootloader) channelid: 0x00

(bootloader) uid: 00CA8FC900000000000000000000

(bootloader) securestate: flashing_unlocked

(bootloader) iswarrantyvoid: yes

(bootloader) max-download-size: 245366784

(bootloader) reason: Volume down key pressed

(bootloader) imei: 355531090962270

(bootloader) meid:

(bootloader) date: 08-22-2018

(bootloader) sku: XT1920-16

(bootloader) carrier_sku: XT1920-16

(bootloader) battid:

(bootloader) iccid:

(bootloader) cust_md5:

(bootloader) max-sparse-size: 268435456

(bootloader) current-time: "Fri Feb 22 20: 3:25 UTC 2019"

(bootloader) ro.build.fingerprint[0]: motorola/pettyl/pettyl:8.1.0/OPGS2

(bootloader) ro.build.fingerprint[1]: 8.54-53-2/254dd:user/release-keys

(bootloader) poweroffalarm: 0

(bootloader) ro.build.version.full[0]: Blur_Version.28.291.2.pettyl.reta

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

(bootloader) ro.build.version.qcom: LA.UM.6.6.r1-08600-89xx.0

(bootloader) version-baseband: M8917_26.30.05.75R PETTYL_EMEADSDS_CUST

(bootloader) kernel.version[0]: Linux version 3.18.71-perf-g7e74af0-0411

(bootloader) kernel.version[1]: 9-g7a5a452 (hudsoncm@ilclbld35) (gcc ver

(bootloader) kernel.version[2]: sion 4.8 (GCC) ) #1 SMP PREEMPT Thu Jan

(bootloader) kernel.version[3]: 10 16:18:00 CST 2019

(bootloader) sbl1.git: git=MBM-NG-VBE.4F-0-g8ffb6ee

(bootloader) rpm.git: git=02a0726-dirty

(bootloader) tz.git: git=MBM-NG-VBE.4F-0-ge76ade4-dirty

(bootloader) devcfg.git: git=MBM-NG-VBE.4F-0-ge76ade4-dirty

(bootloader) keymaster.git: git=MBM-NG-VBE.4F-0-ge76ade4

(bootloader) cmnlib.git: git=MBM-NG-VBE.4F-0-ge76ade4

(bootloader) cmnlib64.git: git=MBM-NG-VBE.4F-0-ge76ade4

(bootloader) prov.git: git=MBM-NG-VBE.4F-0-ge76ade4-dirty

(bootloader) aboot.git: git=MBM-NG-VBE.4F-0-g4e3d3ac

(bootloader) frp-state: no protection (277)

(bootloader) ro.carrier: reteu

(bootloader) current-slot:

(bootloader) slot-suffixes: _a

(bootloader) slot-count: 1

(bootloader) slot-successful:_a: INVALID

(bootloader) slot-successful:_b: INVALID

(bootloader) slot-bootable:_a: INVALID

(bootloader) slot-bootable:_b: INVALID

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

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