[ZTE Axon 7 ROMs, Kernels, Recoveries, & Other Deve] messi2050:
Hmm the link works good for me:

Fri Jan 2 08:32:13 TASHDT 1970
LOG: ARGS: 3 21 /sdcard/Download/Party_v0.4_ARM_20180829.zip

Extracting tool...
LOG: CONSOLE_SES=1

LOG: INSTALLER PATH: /tmp/Party/

PARTY:/tmp/Party # pwd

/tmp/Party

PARTY:/tmp/Party # ls -als

__bionic_open_tzdata: couldn't find any tzdata when looking for TASHST-6:15TASHDT!
__bionic_open_tzdata: couldn't find any tzdata when looking for posixrules!
0 drwxr-xr-x 3 root root 180 Jan 2 08:32 .
0 drwxrwxr-x 3 root shell 120 Jan 2 08:32 ..
0 drwxrwxrwx 3 root root 60 Jan 2 08:32 META-INF
4 -rwxrwxrwx 1 root root 875 Jan 2 08:32 README.md
808 -rwxrwxrwx 1 root root 825016 Jan 2 08:32 e2fsck
140 -rwxrwxrwx 1 root root 140932 Jan 2 08:32 keycheck
968 -rwxrwxrwx 1 root root 991144 Jan 2 08:32 mke2fs
500 -rwxrwxrwx 1 root root 511896 Jan 2 08:32 resize2fs
912 -rwxrwxrwx 1 root root 931800 Jan 2 08:32 sgdisk

#########################################
# #
# - P A R T Y - #
# #
# The Android Partition Treblerizer #
# #
#########################################
# #
# v0.4 (c) Oki @ XDA 2018-08-29 #
# #
#########################################

This tool creates or removes the vendor
partition taking space from system or
userdata partitions. This way, developers
will be able to create Treble ROMs for
legacy devices. and users can switch back
and forth from Non Treble to Treble ROMs.

Press Vol Up to continue...
LOG: - ISVENDOR is 1

LOG: - VENDOR NOT DETECTED

- No Vendor partition Detected

- Create new VENDOR partition?
Vol UP = YES, Vol DN = NO

- Where do you want to take space from?
Vol UP: SYSTEM / Vol DN: DATA
LOG: - PARTITION LABEL is system

PARTY:/tmp/Party # /tmp/Party/sgdisk --print /dev/block/mmcblk0

Disk /dev/block/mmcblk0: 30785536 sectors, 14.7 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 98101B32-BBE2-4BF2-A06E-2BB33D000C20
Partition table holds up to 68 entries
First usable sector is 34, last usable sector is 30785502
Partitions will be aligned on 1024-sector boundaries
Total free space is 77790 sectors (38.0 MiB)

Number Start (sector) End (sector) Size Code Name
1 16384 188415 84.0 MiB 0700 modem
2 196608 197631 512.0 KiB FFFF fsc
3 197632 198655 512.0 KiB FFFF ssd
4 198656 200703 1024.0 KiB FFFF sbl1
5 200704 202751 1024.0 KiB FFFF sbl1bak
6 202752 203775 512.0 KiB FFFF rpm
7 203776 204799 512.0 KiB FFFF rpmbak
8 204800 208895 2.0 MiB FFFF tz
9 208896 212991 2.0 MiB FFFF tzbak
10 212992 245759 16.0 MiB FFFF dsp
11 245760 248831 1.5 MiB FFFF modemst1
12 248832 251903 1.5 MiB FFFF modemst2
13 262144 294911 16.0 MiB FFFF misc
14 294912 295935 512.0 KiB FFFF DDR
15 295936 299007 1.5 MiB FFFF fsg
16 299008 300031 512.0 KiB FFFF sec
17 300032 304127 2.0 MiB FFFF aboot
18 304128 308223 2.0 MiB FFFF abootbak
19 308224 309247 512.0 KiB FFFF hyp
20 309248 310271 512.0 KiB FFFF hypbak
21 311296 327679 8.0 MiB FFFF drm
22 327680 344063 8.0 MiB FFFF sns
23 344064 409599 32.0 MiB FFFF mpt
24 409600 411647 1024.0 KiB FFFF devinfo
25 425984 427007 512.0 KiB FFFF persistent
26 442368 507903 32.0 MiB FFFF boot
27 507904 573439 32.0 MiB FFFF laf
28 573440 638975 32.0 MiB FFFF recovery
29 638976 704511 32.0 MiB FFFF recoverybak
30 704512 770047 32.0 MiB FFFF factory
31 770048 778239 4.0 MiB FFFF raw_resources
32 778240 786431 4.0 MiB FFFF raw_resourcesbak
33 786432 851967 32.0 MiB FFFF persist
34 851968 983039 64.0 MiB FFFF oem
35 983040 1048575 32.0 MiB FFFF mdtp
36 1048576 1049599 512.0 KiB FFFF syscfg
37 1049600 1057791 4.0 MiB FFFF mcfg
38 1057792 1059839 1024.0 KiB FFFF dip
39 1059840 1060863 512.0 KiB FFFF keystore
40 1060864 1061887 512.0 KiB FFFF rct
41 1061888 1062911 512.0 KiB FFFF encrypt
42 1062912 1063935 512.0 KiB FFFF eksst
43 1063936 1064959 512.0 KiB FFFF mota
44 1064960 1065983 512.0 KiB FFFF apdp
45 1065984 1067007 512.0 KiB FFFF msadp
46 1067008 1068031 512.0 KiB FFFF dpo
47 1068032 1069055 512.0 KiB FFFF devcfg
48 1069056 1070079 512.0 KiB FFFF devcfgbak
49 1070080 1077247 3.5 MiB FFFF spare1
50 1081344 1082367 512.0 KiB FFFF limits
51 1082368 1083391 512.0 KiB FFFF lksecapp
52 1083392 1084415 512.0 KiB FFFF lksecappbak
53 1084416 1085439 512.0 KiB FFFF cmnlib
54 1085440 1086463 512.0 KiB FFFF cmnlibbak
55 1086464 1087487 512.0 KiB FFFF cmnlib64
56 1087488 1088511 512.0 KiB FFFF cmnlib64bak
57 1088512 1089535 512.0 KiB FFFF keymaster
58 1089536 1090559 512.0 KiB FFFF keymasterbak
59 1090560 1097727 3.5 MiB FFFF spare2
60 1097728 1118207 10.0 MiB FFFF fota
61 1118208 1130495 6.0 MiB FFFF spare3
62 1130496 8036351 3.3 GiB FFFF system
63 8044544 9068543 500.0 MiB FFFF cache
64 9068544 9502719 212.0 MiB FFFF OP
65 9502720 30767103 10.1 GiB FFFF userdata
66 30767104 30785502 9.0 MiB FFFF grow
- Vendor will be splitted from SYSTEM.

- What is your desired Vendor partition size ?
Vol UP: 512MB / Vol DN: 800MB
LOG: - SIZE will be 512

- 512 MB will be taken from SYSTEM.

- Place Vendor after or before SYSTEM partition?
WARNING: BEFORE requires full wipe of SYSTEM.
Vol UP: AFTER / Vol DN: BEFORE
LOG: - POSITION IS end

- Vendor will be at the end of SYSTEM.

- Disk /dev/block/mmcblk0 will be used.
LOG: - NEW VENDORNUM is 67.

- Empty slot available in Partition Table.
- Splitting Vendor from SYSTEM's end.
LOG: - NEWINI is 6987776.

- Trying to resize system without wipe...
LOG: - PARTMINSIZE is 401018.

- No wipe required, system can be safely resized.
LOG: - system (/dev/block/mmcblk0p62) was already unmounted

- Checking SYSTEM for errors...

PARTY:/tmp/Party # /tmp/Party/e2fsck -y -f /dev/block/mmcblk0p62

e2fsck 1.43.3 (04-Sep-2016)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
system: 4540/216000 files (0.1% non-contiguous), 407337/863232 blocks
- Resizing SYSTEM filesystem...

PARTY:/tmp/Party # /tmp/Party/resize2fs /dev/block/mmcblk0p62 5857280

resize2fs 1.43.3 (04-Sep-2016)
Please run 'e2fsck -f /dev/block/mmcblk0p62' first.

- Adjusting partition table for
disk /dev/block/mmcblk0 ...

PARTY:/tmp/Party # /tmp/Party/sgdisk --delete=62 --new=62:1130496:6987775 --change-name=62:system --new=67:6987776:8036351 --change-name=67:vendor --print /dev/block/mmcblk0

Setting name!
partNum is 61
REALLY setting name!
Setting name!
partNum is 66
REALLY setting name!
Disk /dev/block/mmcblk0: 30785536 sectors, 14.7 GiB
Logical sector size: 512 bytes
Disk identifier (GUID): 98101B32-BBE2-4BF2-A06E-2BB33D000C20
Partition table holds up to 68 entries
First usable sector is 34, last usable sector is 30785502
Partitions will be aligned on 1024-sector boundaries
Total free space is 77790 sectors (38.0 MiB)

Number Start (sector) End (sector) Size Code Name
1 16384 188415 84.0 MiB 0700 modem
2 196608 197631 512.0 KiB FFFF fsc
3 197632 198655 512.0 KiB FFFF ssd
4 198656 200703 1024.0 KiB FFFF sbl1
5 200704 202751 1024.0 KiB FFFF sbl1bak
6 202752 203775 512.0 KiB FFFF rpm
7 203776 204799 512.0 KiB FFFF rpmbak
8 204800 208895 2.0 MiB FFFF tz
9 208896 212991 2.0 MiB FFFF tzbak
10 212992 245759 16.0 MiB FFFF dsp
11 245760 248831 1.5 MiB FFFF modemst1
12 248832 251903 1.5 MiB FFFF modemst2
13 262144 294911 16.0 MiB FFFF misc
14 294912 295935 512.0 KiB FFFF DDR
15 295936 299007 1.5 MiB FFFF fsg
16 299008 300031 512.0 KiB FFFF sec
17 300032 304127 2.0 MiB FFFF aboot
18 304128 308223 2.0 MiB FFFF abootbak
19 308224 309247 512.0 KiB FFFF hyp
20 309248 310271 512.0 KiB FFFF hypbak
21 311296 327679 8.0 MiB FFFF drm
22 327680 344063 8.0 MiB FFFF sns
23 344064 409599 32.0 MiB FFFF mpt
24 409600 411647 1024.0 KiB FFFF devinfo
25 425984 427007 512.0 KiB FFFF persistent
26 442368 507903 32.0 MiB FFFF boot
27 507904 573439 32.0 MiB FFFF laf
28 573440 638975 32.0 MiB FFFF recovery
29 638976 704511 32.0 MiB FFFF recoverybak
30 704512 770047 32.0 MiB FFFF factory
31 770048 778239 4.0 MiB FFFF raw_resources
32 778240 786431 4.0 MiB FFFF raw_resourcesbak
33 786432 851967 32.0 MiB FFFF persist
34 851968 983039 64.0 MiB FFFF oem
35 983040 1048575 32.0 MiB FFFF mdtp
36 1048576 1049599 512.0 KiB FFFF syscfg
37 1049600 1057791 4.0 MiB FFFF mcfg
38 1057792 1059839 1024.0 KiB FFFF dip
39 1059840 1060863 512.0 KiB FFFF keystore
40 1060864 1061887 512.0 KiB FFFF rct
41 1061888 1062911 512.0 KiB FFFF encrypt
42 1062912 1063935 512.0 KiB FFFF eksst
43 1063936 1064959 512.0 KiB FFFF mota
44 1064960 1065983 512.0 KiB FFFF apdp
45 1065984 1067007 512.0 KiB FFFF msadp
46 1067008 1068031 512.0 KiB FFFF dpo
47 1068032 1069055 512.0 KiB FFFF devcfg
48 1069056 1070079 512.0 KiB FFFF devcfgbak
49 1070080 1077247 3.5 MiB FFFF spare1
50 1081344 1082367 512.0 KiB FFFF limits
51 1082368 1083391 512.0 KiB FFFF lksecapp
52 1083392 1084415 512.0 KiB FFFF lksecappbak
53 1084416 1085439 512.0 KiB FFFF cmnlib
54 1085440 1086463 512.0 KiB FFFF cmnlibbak
55 1086464 1087487 512.0 KiB FFFF cmnlib64
56 1087488 1088511 512.0 KiB FFFF cmnlib64bak
57 1088512 1089535 512.0 KiB FFFF keymaster
58 1089536 1090559 512.0 KiB FFFF keymasterbak
59 1090560 1097727 3.5 MiB FFFF spare2
60 1097728 1118207 10.0 MiB FFFF fota
61 1118208 1130495 6.0 MiB FFFF spare3
62 1130496 6987775 2.8 GiB 8300 system
63 8044544 9068543 500.0 MiB FFFF cache
64 9068544 9502719 212.0 MiB FFFF OP
65 9502720 30767103 10.1 GiB FFFF userdata
66 30767104 30785502 9.0 MiB FFFF grow
67 6987776 8036351 512.0 MiB 8300 vendor
Warning: The kernel is still using the old partition table.
The new table will be used at the next reboot.
The operation has completed successfully.
- Formatting /vendor as ext4

PARTY:/tmp/Party # /tmp/Party/mke2fs -t ext4 /dev/block/mmcblk0p67

mke2fs 1.43.3 (04-Sep-2016)
The file /dev/block/mmcblk0p67 does not exist and no size was specified.
Done OK.

- WARNING: Kernel is still using the old table.
Reboot recovery is highly recommended.
Do you want to reboot recovery now?
Vol UP: YES / Vol DN: NO

Vendor partition works well but the shrinked partition is somehow not accessible after shrinking and rebooting back into twrp only if the new vendor partition was removed, shrinked partition back to work normally, i will need to do further tests though..