R11e-LTE6_V025 firmware very hard to get CA up

RouterOS Beginner Basics
1

I’m using wAP R ac (LTE6) and after I have upgraded the LTE6 modem firmware from R11e-LTE6_V022 to R11e-LTE6_V025, I notice the chance of the new firmware to get CA up very slim versus the old firmware. I use to get CA automatically up when my traffic is heavy. With the old firmware, R11e-LTE6_V022 and when CA is up I can get the speed up to 80Mbps and now with new firmware, R11e-LTE6_V025 I never get pass 45Mbps. Also with the new firmware, if perform cell lock band, it become even harder to get CA up.

The below are the CA combination I used to get with the old firmware, R11e-LTE6_V022

Primary Band : B7@20Mhz earfcn: 3350 phy-cellid: 273
CA Band : B3@20Mhz earfcn: 1850 phy-cellid: 273

Primary Band : B7@20Mhz earfcn: 3350 phy-cellid: 347
CA Band : B3@20Mhz earfcn: 1850 phy-cellid: 346

Primary Band : B8@5Mhz earfcn: 3524 phy-cellid: 257
CA Band : B3@20Mhz earfcn: 1850 phy-cellid: 257

Anybody facing this problem after upgrade to R11e-LTE6_V025?

R11e-LTE6 firmware and AT commands doc
R11e-LTE6 firmware and AT commands doc
2

I can confirm that as COMMON BUG in this version. In my personal opinion the best fw what I testing was v24 but this was as release candidate :(.
PLEASE create a support case at support@mikrotik.com and report that ! Only that way you report this problem officially, forum is not important.

3

I actually don’t have this issue. I can use cell-lock and get CA without particular issues.

4

Good for you, many person have that problem with v20 and v25 and with some ISP.
In my exable with Poland\CyfrowyPolsat the FreqCellLock & CA can works together in v20 after some at+reset, in v25 it’s not work. In v24_rc works perfect.
In Poland\Play the Freq\CellLock & CA not work in v20 and v25 but works in v24rc who was the best beta / release candidate ever i test.

5

New update:

After upgraded RouterOS to v6.46.6, CA can up. If CA not up, perform a LTE scan, this will force LTE CA to up.

6

I add some info.
/interface lte at-cat lte1 nput=“at*cell=0”
sometimes even when you not use Freq/CellLock can fix ca-band faster then other commands.

With Freq or Cell Lock it’s hard to get CA, not every can do it, it’s like case with ISP.
Some clue you can get via command:
interface lte at-chat 0 input=“at+eemginfo?”
+EEMLTEINTER: 1, 430, 1300, 23, 0
where
intra is the same band, to connect he must have other earfcn and be next freq
Inter is other cell to connect