Hi Rabie
Searching the site your computer is made by might be a good place to search for firmware.
No luck on the firmware yet, but there might be another way.
The vendor ID : product ID for your reader is 0bda:0153.
A search on that returns Realtek 3-in-1 (SD/SDHC/SDXC) Card Reader.
If you are running TC11 or higher, your reader should be supported by the ums-realtek driver.
To see if the driver supports your card, run:
modinfo ums_realtek
You should see a line that matches this:
alias: usb:v0BDAp0153d*dc*dsc*dp*ic*isc*ip*in*
If you get a match, we can try altering a driver parameter. Item 3 looks interesting:
parm: ss_delay:seconds to delay before entering selective suspend
parm: ss_en:enable selective suspend
parm: auto_delink_en:auto delink mode (0=firmware, 1=software [default])
Unload then reload the driver with altered parameter:
sudo modprobe -r ums_realtek
sudo modprobe -v ums_realtek auto_delink_en=0
Test inserting, unmounting, and removing the SD card.