[OnePlus Nord N200 5G] scanman0:
I have extracted the boot.img from the Android12 Tmobile payload.bin using Payload-Dumper-Go:

Y:\Phone\msmdownload tool-rom\PayloadDumperGoV1.0>payload-dumper-go payload.bin
payload.bin: payload.bin
Payload Version: 2
Payload Manifest Length: 151601
Payload Manifest Signature Length: 267
Found partitions:
system (642 MB), system_ext (966 MB), product (14 MB), vbmeta_system (4.1 kB), oplusstanvbk (6.4 MB), featenabler (90 kB), hyp (397 kB), rpm (254 kB), logo (344 kB), boot (101 MB), vendor_boot (101 MB), vendor (430 MB), odm (630 MB), dtbo (25 MB), vbmeta (8.2 kB), xbl (3.5 MB), xbl_config (74 kB), tz (3.4 MB), modem (178 MB), bluetooth (979 kB), abl (209 kB), dsp (34 MB), keymaster (250 kB), devcfg (45 kB), qupfw (57 kB), imagefv (537 kB), core_nhlos (125 MB), uefisecapp (127 kB), my_product (136 MB), my_engineering (348 kB), my_stock (732 MB), my_company (348 kB), my_carrier (348 kB), my_region (704 kB), my_heytap (714 MB), my_preload (348 kB), my_manifest (348 kB), my_bigball (624 MB)
system_ext (966 MB) [===========================] 100 %
product (14 MB) [===========================] 100 %
vbmeta_system (4.1 kB) [===========================] 100 %
system (642 MB) [============================] 100 %
oplusstanvbk (6.4 MB) [===========================] 100 %
featenabler (90 kB) [============================] 100 %
hyp (397 kB) [=============================] 100 %
rpm (254 kB) [============================] 100 %
logo (344 kB) [============================] 100 %
boot (101 MB) [===========================] 100 %
vendor_boot (101 MB) [=========================] 100 %
vendor (430 MB) [===========================] 100 %
odm (630 MB) [===========================] 100 %
dtbo (25 MB) [============================] 100 %
vbmeta (8.2 kB) [============================] 100 %
xbl (3.5 MB) [=============================] 100 %
xbl_config (74 kB) [===========================] 100 %
tz (3.4 MB) [=============================] 100 %
modem (178 MB) [==========================] 100 %
bluetooth (979 kB) [===========================] 100 %
abl (209 kB) [============================] 100 %
dsp (34 MB) [============================] 100 %
keymaster (250 kB) [===========================] 100 %
devcfg (45 kB) [============================] 100 %
qupfw (57 kB) [============================] 100 %
imagefv (537 kB) [===========================] 100 %
core_nhlos (125 MB) [==========================] 100 %
my_product (136 MB) [=========================] 100 %
uefisecapp (127 kB) [==========================] 100 %
my_engineering (348 kB) [========================] 100 %
my_stock (732 MB) [=========================] 100 %
my_company (348 kB) [========================] 100 %
my_carrier (348 kB) [==========================] 100 %
my_region (704 kB) [=========================] 100 %
my_heytap (714 MB) [========================] 100 %
my_preload (348 kB) [========================] 100 %
my_manifest (348 kB) [========================] 100 %
my_bigball (624 MB) [=======================] 100 %

Y:\Phone\msmdownload tool-rom\PayloadDumperGoV1.0>dir
Volume in drive Y is Y - Drivers - Software
Volume Serial Number is 32B4-C37E

Directory of Y:\Phone\msmdownload tool-rom\PayloadDumperGoV1.0

07/01/2022 04:57 PM <DIR> .
07/01/2022 04:57 PM <DIR> ..
07/01/2022 04:57 PM <DIR> extracted_20220701_165705
12/09/2021 07:28 AM 154,319 liblzma-5.dll
07/01/2022 04:46 PM 22 liblzma-5.zip
10/06/2020 08:50 AM 12,354,453 payload-dumper-go.exe
01/01/2009 12:00 AM 3,777,851,373 payload.bin
07/01/2022 04:21 PM 1,765,502 PayloadDumper.zip
5 File(s) 3,792,125,669 bytes
3 Dir(s) 1,244,134,313,984 bytes free

Y:\Phone\msmdownload tool-rom\PayloadDumperGoV1.0>dir extracted_20220701_165705 /C
Volume in drive Y is Y - Drivers - Software

Directory of Y:\Phone\msmdownload tool-rom\PayloadDumperGoV1.0\extracted_20220701_165531

07/01/2022 04:56 PM <DIR> .
07/01/2022 04:56 PM <DIR> ..
07/01/2022 04:56 PM 208,896 abl.img
07/01/2022 04:56 PM 978,944 bluetooth.img
07/01/2022 04:55 PM 100,663,296 boot.img
07/01/2022 04:56 PM 125,042,688 core_nhlos.img
07/01/2022 04:56 PM 45,056 devcfg.img
07/01/2022 04:56 PM 33,554,432 dsp.img
07/01/2022 04:55 PM 25,165,824 dtbo.img
07/01/2022 04:55 PM 90,112 featenabler.img
07/01/2022 04:55 PM 397,312 hyp.img
07/01/2022 04:56 PM 536,576 imagefv.img
07/01/2022 04:56 PM 249,856 keymaster.img
07/01/2022 04:55 PM 344,064 logo.img
07/01/2022 04:55 PM 177,459,200 modem.img
07/01/2022 04:56 PM 623,935,488 my_bigball.img
07/01/2022 04:56 PM 348,160 my_carrier.img
07/01/2022 04:56 PM 348,160 my_company.img
07/01/2022 04:56 PM 348,160 my_engineering.img
07/01/2022 04:56 PM 714,235,904 my_heytap.img
07/01/2022 04:56 PM 348,160 my_manifest.img
07/01/2022 04:56 PM 348,160 my_preload.img
07/01/2022 04:56 PM 135,450,624 my_product.img
07/01/2022 04:56 PM 704,512 my_region.img
07/01/2022 04:56 PM 731,537,408 my_stock.img
07/01/2022 04:55 PM 630,448,128 odm.img
07/01/2022 04:55 PM 6,381,568 oplusstanvbk.img
07/01/2022 04:55 PM 13,729,792 product.img
07/01/2022 04:56 PM 57,344 qupfw.img
07/01/2022 04:55 PM 253,952 rpm.img
07/01/2022 04:55 PM 642,093,056 system.img
07/01/2022 04:56 PM 966,074,368 system_ext.img
07/01/2022 04:55 PM 3,366,912 tz.img
07/01/2022 04:56 PM 126,976 uefisecapp.img
07/01/2022 04:55 PM 8,192 vbmeta.img
07/01/2022 04:55 PM 4,096 vbmeta_system.img
07/01/2022 04:55 PM 429,576,192 vendor.img
07/01/2022 04:55 PM 100,663,296 vendor_boot.img
07/01/2022 04:55 PM 3,530,752 xbl.img
07/01/2022 04:55 PM 73,728 xbl_config.img
38 File(s) 5,468,729,344 bytes
2 Dir(s) 1,244,134,313,984 bytes free

Y:\Phone\msmdownload tool-rom\PayloadDumperGoV1.0>

XDA won't allow me to attach the file here.

I applied just now for developer at AndroidFileHost to post it there.

In the meantime I can post it to the N200 channel at Telegram:

Nord N200 Testers

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