[Samsung Galaxy Watch 4] adfree:
[0: 4.451206 ] Footer.magic : AVBf
[0: 4.451210 ] Footer.version : 1.0
[0: 4.451214 ] Footer.original_image_size : 0x2f6330
[0: 4.451217 ] Footer.vbmeta_offset : 0x2f7000
[0: 4.451220 ] Footer.vbmeta_size : 0x840
[0: 4.451223 ] get_original_image_size: Found Footer Info for BOTA, original size: 0x2f6330
[0: 4.451228 ] Verify_Signature_Ecdsa 0xa3e80074 3105584, 0xa4176194 512
[0: 4.473469 ] check_signature (BOOTLOADER) valid.
[0: 4.483628 ] Check DRAM STORE training data..
[0: 4.483632 ] ACPM magic code: 0xAC8338A9
[0: 4.483636 ] Write magic code: 0xF67038A9
[0: 4.547556 ] Restore DRAM training data..
[0: 4.558104 ] _sbl_bota_update: BOOTLOADER Update Completed.
[0: 4.558111 ] _sbl_bota_update: tzar.img(6292240) -> TZAR(9) Update Start.
[0: 4.558122 ] avb_footer.c:41: ERROR: Footer magic is incorrect.
security_core.c:1358: ERROR: BOTA: Error validating footer.
BOTA : Error validating footer.
[0: 4.558138 ] Verify_Signature_Ecdsa 0xa4280098 6292240, 0xa4880198 512
[0: 4.588086 ] check_signature (TZAR) valid.
[0: 4.760372 ] _sbl_bota_update: TZAR Update Completed.
[0: 4.760379 ] _sbl_bota_update: tzsw.img(1572864) -> TZSW(8) Update Start.
[0: 4.760396 ] Footer.magic : AVBf
[0: 4.760400 ] Footer.version : 1.0
[0: 4.760403 ] Footer.original_image_size : 0x100310
[0: 4.760407 ] Footer.vbmeta_offset : 0x101000
[0: 4.760410 ] Footer.vbmeta_size : 0x840
[0: 4.760413 ] get_original_image_size: Found Footer Info for BOTA, original size: 0x100310
[0: 4.760418 ] Verify_Signature_Ecdsa 0xa48803cc 1049360, 0xa49804cc 512
[0: 4.777709 ] check_signature (TZSW) valid.
[0: 4.823222 ] _sbl_bota_update: TZSW Update Completed.
[0: 4.823231 ] _sbl_bota_update: uh.bin(276120) -> UH(15) Update Start.
[0: 4.846012 ] _sbl_bota_update: UH Update Completed.
[0: 4.846020 ] _sbl_bota_update: up_param.bin(706560) -> UP_PARAM(13) Update Start.
[0: 4.871416 ] _sbl_bota_update: UP_PARAM Update Completed.
[0: 4.871425 ] _sbl_bota_update: vbmeta.img(9744) -> VBMETA(23) Update Start.
[0: 4.871435 ] avb_footer.c:41: ERROR: Footer magic is incorrect.
security_core.c:1358: ERROR: BOTA: Error validating footer.
BOTA : Error validating footer.
[0: 4.871451 ] Verify_Signature_Ecdsa 0xa4af02d0 9744, 0xa4af26d0 512
[0: 4.886209 ] check_signature (VBMETA) valid.
[0: 4.899964 ] _sbl_bota_update: VBMETA Update Completed.
[0: 4.932208 ] s2mpw03_get_vbat: vBAT=4183mV
[0: 4.932309 ] s2mpw03_get_soc: capacity (0xec0:9218)
[0: 4.959070 ] sys_restart ('N':fota_up)
[0: 4.959074 ]
[0: 4.959077 ] [SECD] clear_debug_flags: Clear DINFOM and RAMBASE
[0: 4.959082 ] set_minform_magic: before: 4e4e0000 (type: 1, magic: 4e)
[0: 4.959090 ] set_minform_magic: after: 4e4e0000
[0: 4.959095 ] set_minform_magic: before: 4e4e0000 (type: 3, magic: 0)
[0: 4.959102 ] set_minform_magic: after: 4e4e0000
[0: 4.959107 ] set_minform_magic: before: 4e4e0000 (type: 2, magic: 0)
[0: 4.959114 ] set_minform_magic: after: 4e4e0000
[0: 4.959119 ] display_drv_clear was called
[0: 4.959123 ] panel_exit +
[0: 5.079213 ] dsim_set_panel_power off +
[0: 5.091298 ] MMC0 PON set in mmc_power_off_notification
[000.000000] NOTICE: EPBL Self Decryption success
[000.046719] NOTICE: SecureBoot: [BL2] Check digital signature and RP count success

I am looking through my old Debug Logs...

Search text string:

vbmeta.img

According to filename something taken in EVB4... dumpState...log