Do not try to install the iPad 2 or iPad 3 firmware. It will fail or brick the device. You specifically need the firmware for iPad1,1 .
Because this device is over a decade old, the term "exclusive firmware" usually refers to one of two things: the (which is exclusive to the hardware capabilities of that era) or jailbreak tools that allow you to bypass Apple's restrictions. ipad a1219 firmware exclusive
If you own an A1219, do not attempt a standard iTunes restore. Archive a copy of iPad2,4_9.3.5_13G36_Restore.ipsw today. Join the Discord communities dedicated to legacy iOS, because once these exclusive binaries disappear from the few remaining servers, the A1219 will finally sleep forever. Do not try to install the iPad 2 or iPad 3 firmware
Here is the content breakdown regarding the firmware situation for the iPad A1219. Because this device is over a decade old,
: Many users repurpose them as dedicated sleep aids.
This makes the A1219’s firmware a – exclusive in what it omits.