Protocol version: 2

[d1m000n]

Hello!
Tried from my Mint 21 Vanessa and from yours LiveDVD - same results:
_user@livedvd:~/edl$ edl printgpt
Capstone library is missing (optional).
Keystone library is missing (optional).
Qualcomm Sahara / Firehose Client V3.60 (c) B.Kerler 2018-2022.
main - Trying with no loader given ...
main - Waiting for the device
main - Device detected :)
sahara - Protocol version: 2, Version supported: 1
main - Mode detected: sahara
sahara -

HWID: 0x000c30e100000000 (MSM_ID:0x000c30e1,OEM_ID:0x0000,MODEL_ID:0x0000)
CPU detected: "SM8250:CD90-PH805-1A"
PK_HASH: 0x503b13f78c1e5374550c1dc0c03f68af364c42cc50d5972047db276871f5bd76ca2aab97b60499e73523583a081153fa
Serial: 0x88c8dd1d

sahara - Found possible loader: /usr/local/lib/python3.10/dist-packages/edlclient-3.60-py3.10.egg/edlclient/../Loaders/lenovo_motorola/0000000000000000_503b13f78c1e5374_fhprg.bin
sahara - Protocol version: 2, Version supported: 1
sahara - Uploading loader /usr/local/lib/python3.10/dist-packages/edlclient-3.60-py3.10.egg/edlclient/../Loaders/lenovo_motorola/0000000000000000_503b13f78c1e5374_fhprg.bin ...
sahara - 64-Bit mode detected.
sahara - Firehose mode detected, uploading...
sahara
sahara - [LIB]: Error: Cannot receive specified number of program headers
Connection detected, quiting._

As i understood, protocol v.2 is not supported by your program?
My device - Lenovo TB-Q706F, tablet.

[bkerler]

It is supported, but your issue most probably is that Lenovo uses VIP programming ...