problem with my lenovo tablet

hello!
I have a lenovo tab m10 hd TB-X505L tablet.
I tried to install a custom ROM on this tablet, but it didn't work.
I thought I would delete this customrom and restore the factory Android
I downloaded the given firmware flash package from the lenovo website, ran the given bat file with the tablet connected to the machine, and since then the tablet restarts and stops at the lenovo logo and restarts, there is no recovery mode, and the fastboot only shows a triangle.
the name of the flash package I downloaded
Lenovo_Tab_M10_HD_TB-X505L_HW80_S001021_1911181241_Q00015_ROW_QDL
contents of the bat file
@echo off
adb reboot bootloader
echo for not erase modemst1 and modemst2

rem fastboot flash partition gpt_both0.bin
fastboot flash tz tz.mbn
fastboot flash sbl1 sbl1.mbn
fastboot flash rpm rpm.mbn
fastboot flash aboot emmc_appsboot.mbn
fastboot flash devcfg devcfg.mbn
fastboot flash keymaster km4.mbn
fastboot flash cmnlib cmnlib_30.mbn
fastboot flash cmnlib64 cmnlib64_30.mbn

fastboot flash tzbak tz.mbn
fastboot flash sbl1bak sbl1.mbn
fastboot flash rpmbak rpm.mbn
fastboot flash abootbak emmc_appsboot.mbn
fastboot flash devcfgbak devcfg.mbn
fastboot flash keymasterbak km4.mbn
fastboot flash cmnlibbak cmnlib_30.mbn
fastboot flash cmnlib64bak cmnlib64_30.mbn

rem fastboot flash fsg fs_image.tar.gz.mbn.img
rem fastboot flash modemst1 dummy.bin
rem fastboot flash modemst2 dummy.bin
rem fastboot flash persist persist.img

fastboot erase boot
fastboot flash modem NON-HLOS.bin
fastboot flash system system.img
fastboot flash cache cache.img
fastboot flash userdata userdata.img
fastboot flash recovery recovery.img
rem fastboot flash sec sec.dat
fastboot flash dsp adspso.bin
fastboot flash dspbak adspso.bin
fastboot flash mdtp mdtp.img
fastboot flash mdtpbak mdtp.img
fastboot erase splash
fastboot flash splash splash.img
fastboot erase DDR
fastboot flash boot boot.img
fastboot flash dtbo dtbo.img
fastboot flash dtbobak dtbo.img
fastboot flash vendor vendor.img
fastboot flash vbmeta vbmeta.img
fastboot flash vbmetabak vbmeta.img

fastboot reboot
pause

Only idea would be to try the reinstall again.

I tried with the bat files, but it didn't work