UMT Problems with Lenovo Tab P11 Gen 2 (TB350FU)) Seeing "ACK Error!" Can anyone shed some light on this one?

[desync10]

Attempting to clear the FRP lock on a

Lenovo Tab P11 Gen 2, model TB350FU and receiving Ack Error! Write Error! following the step "Reading Partition Table!" I'm using da, da_auth and preloader from the firmware package received from Lenovo's "Rescue" software.

I've tried various settings and also tried to just read the partition table and nothing has worked. Even tried a different computer. Anyone have any suggestions? See log below..

Thanks in advance!

Brand/Model : *Auto* / *Auto Detect*
Operation : Reset FRP (2025)
LOCAL SLA : OFF
BOOT CFG : [EXPLOIT:OFF]
CUST DA : D:\DA_BR.bin
CUST PL : D:\preloader_tulip_row_wifi.bin
CUST AUTH : D:\da.auth
Waiting for Device...Found
Port : MediaTek PreLoader USB VCOM (Android) (COM5)
Device Path : \\?\usb#vid_0e8d&pid_2000#6&2b113eed&0&8#{a5dcbf10-6530-11d2-901f-00c04fb951ed}
Driver : MediaTek Inc., 3.0.1512.0 [usb2ser.sys]
Mode : PRELOADER
Hw ID : MT6789 [1208] MTK Helio G99
Details : 8A00,CA00,0000
Sec. Config : [SBA:ON] [SLA:OFF] [DAA:ON]
MEID : A754AF158EE7A8080BC90A5512FDAB23
SoC ID[0] : 3AB505A34A1ECF3BAEE8349AA52F6324
SoC ID[1] : E8C120F4F2193F0139A1993D03D03E34
WARNING! DA Auth is Enabled! Only Special DA will work!
DA : DA_BR.bin
DA_INFO : MTK_DA_v6_2022-06-27 14:22:28
Sending 1st DA..OK
Jump DA Address...OK
V6 Protocol Detected!
Reading Hardware Information...OK
EXT_RAM Not Initialized!
Setup Hardware Init...OK
Reading Hardware Information...OK
VERSION : 1.2
RNDM_ID : ff084737d59d71f775c89e9728d26cd5
RAM_SIZE : 0x100000000 [4.00 GB]
STORAGE : KM5L9001DM-B424 [UFS]
TYPE : UFS
BLOCK_SIZE : 0x1000
BOOT1 SIZE : 0x0000000000400000 [4.00 MB]
BOOT2 SIZE : 0x0000000000400000 [4.00 MB]
USER SIZE : 0x0000001DCB000000 [119.17 GB]
RPMB SIZE : 0x0000000000000000 [0 bytes]
Sending DA2...Done
SLA : DISABLED
Life-Cycle : OK
RPMB Key : UNKNOWN
Reading Partition Table...OKResp. Error!ACK Error!Write Error!Write Error!Write Error!Write Error!Write Error!Write Error!Write Error!Write Error!Write Error!Write Error!Write Error!Write Error!Write Error!
Running FRP Reset (2025)...Write Error!Error
Operation Finished.
[UltimateMTK2 v2.9]