After reflashing Unbuntu via USB I cannot use Unbuntu Unbuntu credentials

1766 CHUNK 15288238080(3732480 blks) ==> 2372330212(579177 blks)

done.
system.img built successfully.
copying dtbfile(/home/joel/Downloads/TK1/Linux_for_Tegra_tk1/kernel/dtb/tegra124-jetson_tk1-pm375-000-c00-00.dtb)… done.
copying cfgfile(/home/joel/Downloads/TK1/Linux_for_Tegra_tk1/bootloader/ardbeg/cfg/gnu_linux_fastboot_emmc_full.cfg) to flash.cfg… done.
creating gpt(ppt.img)…

*** GPT Parameters ***
Device Sector Size ------- 512
device size -------------- 15766388736
bootpart size ------------ 8388608
userpart size ------------ 15758000128
Erase Block Size --------- 2097152
FS Buffer size ----------- 4096
Partition Config file ---- flash.cfg
Visible partition flag — GP1
Primary GPT output ------- PPT->ppt.img
Secondary GPT output ----- GPT->gpt.img
Target device name ------- none

*** PARTITION LAYOUT(20 partitions) ***
[ BCT] BH 0 16383 8.0MiB
[ PPT] UH 0 4095 2.0MiB ppt.img
[ PT] UH 4096 8191 2.0MiB
[ EBT] UH 8192 16383 4.0MiB u-boot.bin
[ LNX] UH 16384 49151 16.0MiB
[ SOS] UH 49152 61439 6.0MiB
[ NVC] UH 61440 65535 2.0MiB
[ MPB] UH 65536 77823 6.0MiB
[ MBP] UH 77824 90111 6.0MiB
[ GP1] UH 90112 94207 2.0MiB
[ APP] UV 94208 29954047 14580.0MiB system.img
[ DTB] UV 29954048 29962239 4.0MiB tegra124-jetson_tk1-pm375-000-c00-00.dtb
[ EFI] UV 29962240 30093311 64.0MiB
[ USP] UV 30093312 30101503 4.0MiB
[ TP1] UV 30101504 30109695 4.0MiB
[ TP2] UV 30109696 30117887 4.0MiB
[ TP3] UV 30117888 30126079 4.0MiB
[ WB0] UV 30126080 30130175 2.0MiB
[ UDA] UV 30130176 30773247 314.0MiB
[ GPT] UH 30773248 30777343 2.0MiB gpt.img
copying flasher(/home/joel/Downloads/TK1/Linux_for_Tegra_tk1/bootloader/ardbeg/fastboot.bin)… done.
Existing flashapp(/home/joel/Downloads/TK1/Linux_for_Tegra_tk1/bootloader/nvflash) reused.
*** Flashing target device started. ***
./nvflash --bct PM375_Hynix_2GB_H5TC4G63AFR_RDA_924MHz.cfg --setbct --configfile flash.cfg --create --bl fastboot.bin --odmdata 0x6009C000 --go
Nvflash 4.13.0000 started
BR_CID: 0x34001001740de1001c0000000b058340
rcm version 0X400001
Skipping BoardID read at miniloader level
System Information:
chip name: unknown
chip id: 0x40 major: 1 minor: 1
chip sku: 0x0
chip uid: 0x00000001740de1001c0000000b058340
macrovision: disabled
hdcp: disabled
jtag: disabled
sbk burned: false
board id: 0
warranty fuse: 0
dk burned: false
boot device: emmc
operating mode: 3
device config strap: 0
device config fuse: 0
sdram config strap: 0

RCM communication completed
BCT sent successfully
sending file: tegra124-jetson_tk1-pm375-000-c00-00.dtb

  • 59637/59637 bytes sent
    tegra124-jetson_tk1-pm375-000-c00-00.dtb sent successfully
    odm data: 0x6009c000
    downloading bootloader – load address: 0x83d88000 entry point: 0x83d88000
    sending file: fastboot.bin
  • 594363/594363 bytes sent
    fastboot.bin sent successfully
    waiting for bootloader to initialize
    bootloader downloaded successfully
    ML execution and Cpu Handover took 1 Secs
    Partition backup took 0 Secs
    setting device: 2 3
    deleting device partitions
    creating partition: BCT
    creating partition: PPT
    creating partition: PT
    creating partition: EBT
    creating partition: LNX
    creating partition: SOS
    creating partition: NVC
    creating partition: MPB
    creating partition: MBP
    creating partition: GP1
    creating partition: APP
    creating partition: DTB
    creating partition: EFI
    creating partition: USP
    creating partition: TP1
    creating partition: TP2
    creating partition: TP3
    creating partition: WB0
    creating partition: UDA
    creating partition: GPT
    sending file: ppt.img
    \ 2097152/2097152 bytes sent
    ppt.img sent successfully
    padded 12 bytes to bootloader
    sending file: u-boot.bin
  • 440016/440016 bytes sent
    u-boot.bin sent successfully
    sending file: system.img
    | 2372330212/2372330212 bytes sent
    system.img sent successfully
    sending file: tegra124-jetson_tk1-pm375-000-c00-00.dtb
  • 59637/59637 bytes sent
    tegra124-jetson_tk1-pm375-000-c00-00.dtb sent successfully
    sending file: gpt.img
    \ 2097152/2097152 bytes sent
    gpt.img sent successfully
    Create, format and download took 216 Secs
    Time taken for flashing 219 Secs
    *** The target ardbeg has been flashed successfully. ***
    Reset the board to boot from internal eMMC.